PENGAMBILAN SAMPEL

Pengertian

Sampel adalah sebagian dari populasi. Artinya tidak akan ada sampel jika tidak ada populasi. Populasi adalah keseluruhan elemen atau unsur yang akan kita teliti. Penelitian yang dilakukan atas seluruh elemen dinamakan sensus. Idealnya, agar hasil penelitiannya lebih bisa dipercaya, seorang peneliti harus melakukan sensus. Namun karena sesuatu hal peneliti bisa tidak meneliti keseluruhan elemen tadi, maka yang bisa dilakukannya adalah meneliti sebagian dari keseluruhan elemen atau unsur tadi.

Unsur-unsur yang terdapat dalam sampling

Populasi atau universe adalah sekelompok orang, kejadian, atau benda, yang dijadikan obyek penelitian. Jika yang ingin diteliti adalah sikap konsumen terhadap satu produk tertentu, maka populasinya adalah seluruh konsumen produk tersebut. Jika yang diteliti adalah laporan keuangan perusahaan “X”, maka populasinya adalah keseluruhan laporan keuangan perusahaan “X” tersebut, Jika yang diteliti adalah motivasi pegawai di departemen “A” maka populasinya adalah seluruh pegawai di departemen “A”. Jika yang diteliti adalah efektivitas gugus kendali mutu (GKM) organisasi “Y”, maka populasinya adalah seluruh GKM organisasi “Y”

Elemen/unsur adalah setiap satuan populasi. Kalau dalam populasi terdapat 30 laporan keuangan, maka setiap laporan keuangan tersebut adalah unsur atau elemen penelitian. Artinya dalam populasi tersebut terdapat 30 elemen penelitian. Jika populasinya adalah pabrik sepatu, dan jumlah pabrik sepatu 500, maka dalam populasi tersebut terdapat 500 elemen penelitian.

Syarat sampel yang baik

Secara umum, sampel yang baik adalah yang dapat mewakili sebanyak mungkin karakteristik populasi. Dalam bahasa pengukuran, artinya sampel harus valid, yaitu bisa mengukur sesuatu yang seharusnya diukur. Kalau yang ingin diukur adalah masyarakat Sunda sedangkan yang dijadikan sampel adalah hanya orang Banten saja, maka sampel tersebut tidak valid, karena tidak mengukur sesuatu yang seharusnya diukur (orang Sunda). Sampel yang valid ditentukan oleh dua pertimbangan.

Pertama : Akurasi atau ketepatan , yaitu tingkat ketidakadaan “bias” (kekeliruan) dalam sample.

Kedua : Presisi. Kriteria kedua sampel yang baik adalah memiliki tingkat presisi estimasi.

Ukuran sampel

Ukuran sampel atau jumlah sampel yang diambil menjadi persoalan yang penting manakala jenis penelitian yang akan dilakukan adalah penelitian yang menggunakan analisis kuantitatif. Pada penelitian yang menggunakan analisis kualitatif, ukuran sampel bukan menjadi nomor satu, karena yang dipentingkan alah kekayaan informasi. Walau jumlahnya sedikit tetapi jika kaya akan informasi, maka sampelnya lebih bermanfaat.

Dikaitkan dengan besarnya sampel, selain tingkat kesalahan, ada lagi beberapa faktor lain yang perlu memperoleh pertimbangan yaitu, (1) derajat keseragaman, (2) rencana analisis, (3) biaya, waktu, dan tenaga yang tersedia . (Singarimbun dan Effendy, 1989). Makin tidak seragam sifat atau karakter setiap elemen populasi, makin banyak sampel yang harus diambil. Jika rencana analisisnya mendetail atau rinci maka jumlah sampelnya pun harus banyak. Misalnya di samping ingin mengetahui sikap konsumen terhadap kebijakan perusahaan, peneliti juga bermaksud mengetahui hubungan antara sikap dengan tingkat pendidikan. Agar tujuan ini dapat tercapai maka sampelnya harus terdiri atas berbagai jenjang pendidikan SD, SLTP. SMU, dan seterusnya.. Makin sedikit waktu, biaya , dan tenaga yang dimiliki peneliti, makin sedikit pula sampel yang bisa diperoleh. Perlu dipahami bahwa apapun alasannya, penelitian haruslah dapat dikelola dengan baik (manageable).

Teknik-teknik pengambilan sampel

Secara umum, ada dua jenis teknik pengambilan sampel yaitu, sampel acak atau random sampling / probability sampling, dan sampel tidak acak atau nonrandom samping/nonprobability sampling. Yang dimaksud dengan random sampling adalah cara pengambilan sampel yang memberikan kesempatan yang sama untuk diambil kepada setiap elemen populasi. Artinya jika elemen populasinya ada 100 dan yang akan dijadikan sampel adalah 25, maka setiap elemen tersebut mempunyai kemungkinan 25/100 untuk bisa dipilih menjadi sampel. Sedangkan yang dimaksud dengan nonrandom sampling atau nonprobability sampling, setiap elemen populasi tidak mempunyai kemungkinan yang sama untuk dijadikan sampel. Lima elemen populasi dipilih sebagai sampel karena letaknya dekat dengan rumah peneliti, sedangkan yang lainnya, karena jauh, tidak dipilih; artinya kemungkinannya 0 (nol).

Untuk lebih jelas, klik: home.unpar.ac.id/~hasan/SAMPLING.doc

Barack Obama

Breaking News: In his first press conference since his election on Tuesday (November 4, 2008), President Elect, Barack Obama, discussed the tough economic times ahead and his solutions to the financial crisis. “I do not underestimate the enormity of the task that lies ahead,” Obama said. “It’s not going to be quick, and it’s not going to be easy to dig ourselves out of the hole that we’re in.”

Today’s (November 7, 2008) news conference came immedately after the President Elect, Vice President Elect Joe Biden, and newly appointed chief of staff, Rahm Emanuel, met with the transition’s economic advisory board. Obama opened the conference by addressing serious matters, noting recent umemployment figures, the failing automobile industry, and his opinions on Iran’s nuclear aspirations. He also commented on lighter issues, including his family’s search for a new dog and his daughter’s allergies.

Obama also discussed popular concerns that he would overstep his bounds with current President, George W. Bush. Until his inauguration January 20, 2009, the President Elect said he would defer to the outgoing president. “The United States has only one government and one President,” Obama said, “and until January 20th of next year, that government is the current administration.”

Biography: Barack Hussein Obama was born Aug. 4, 1961, in Honolulu, Hawaii. His father, Barack Obama, Sr., was born of Luo ethnicity in Nyanza Province, Kenya. He grew up herding goats with his own father, who was a domestic servant to the British. Although reared among Muslims, Obama, Sr., became an atheist at some point.

Obama’s mother, Ann Dunham, grew up in Wichita, Kansas. Her father worked on oil rigs during the Depression. After the Japanese attack on Pearl Harbor, he signed up for service in World War II and marched across Europe in Patton’s army. Dunham’s mother went to work on a bomber assembly line. After the war, they studied on the G. I. Bill, bought a house through the Federal Housing Program, and moved to Hawaii.

Meantime, Barack’s father had won a scholarship that allowed him to leave Kenya pursue his dreams in Hawaii. At the time of his birth, Obama’s parents were students at the East–West Center of the University of Hawaii at Manoa.

Obama’s parents separated when he was two years old and later divorced. Obama’s father went to Harvard to pursue Ph. D. studies and then returned to Kenya.

His mother married Lolo Soetoro, another East–West Center student from Indonesia. In 1967, the family moved to Jakarta, where Obama’s half-sister Maya Soetoro–Ng was born. Obama attended schools in Jakarta, where classes were taught in the Indonesian language.

Four years later when Barack (commonly known throughout his early years as “Barry”) was ten, he returned to Hawaii to live with his maternal grandparents, Madelyn and Stanley Dunham, and later his mother (who died of ovarian cancer in 1995).

He was enrolled in the fifth grade at the esteemed Punahou Academy, graduating with honors in 1979. He was only one of three black students at the school. This is where Obama first became conscious of racism and what it meant to be an African–American.

In his memoir, Obama described how he struggled to reconcile social perceptions of his multiracial heritage. He saw his biological father (who died in a 1982 car accident) only once (in 1971) after his parents divorced. And he admitted using alcohol, marijuana and cocaine during his teenage years.

After high school, Obama studied at Occidental College in Los Angeles for two years. He then transferred to Columbia University in New York, graduating in 1983 with a degree in political science.

After working at Business International Corporation (a company that provided international business information to corporate clients) and NYPIRG, Obama moved to Chicago in 1985. There, he worked as a community organizer with low-income residents in Chicago’s Roseland community and the Altgeld Gardens public housing development on the city’s South Side.
It was during this time that Obama, who said he “was not raised in a religious household,” joined the Trinity United Church of Christ. He also visited relatives in Kenya, which included an emotional visit to the graves of his father and paternal grandfather.

Obama entered Harvard Law School in 1988. In February 1990, he was elected the first African–American editor of the Harvard Law Review. Obama graduated magna cum laude in 1991.

After law school, Obama returned to Chicago to practice as a civil rights lawyer, joining the firm of Miner, Barnhill & Galland. He also taught at the University of Chicago Law School. And he helped organize voter registration drives during Bill Clinton’s 1992 presidential campaign.

Obama published an autobiography in 1995 Dreams From My Father: A Story of Race and Inheritance. And he won a Grammy for the audio version of the book.

Obama’s advocacy work led him to run for the Illinois State Senate as a Democrat. He was elected in 1996 from the south side neighborhood of Hyde Park.

During these years, Obama worked with both Democrats and Republicans in drafting legislation on ethics, expanded health care services and early childhood education programs for the poor. He also created a state earned-income tax credit for the working poor. And after a number of inmates on death row were found innocent, Obama worked with law enforcement officials to require the videotaping of interrogations and confessions in all capital cases.

In 2000, Obama made an unsuccessful Democratic primary run for the U. S. House of Representatives seat held by four-term incumbent candidate Bobby Rush.

Following the 9/11 attacks, Obama was an early opponent of President George W. Bush’s push to war with Iraq. Obama was still a state senator when he spoke against a resolution authorizing the use of force against Iraq during a rally at Chicago’s Federal Plaza in October 2002.

“I am not opposed to all wars. I’m opposed to dumb wars,” he said. “What I am opposed to is the cynical attempt by Richard Perle and Paul Wolfowitz and other arm-chair, weekend warriors in this Administration to shove their own ideological agendas down our throats, irrespective of the costs in lives lost and in hardships borne.”

“He’s a bad guy,” Obama said, referring to Iraqi dictator Saddam Hussein. “The world, and the Iraqi people, would be better off without him. But I also know that Saddam poses no imminent and direct threat to the United States, or to his neighbors, that the Iraqi economy is in shambles, that the Iraqi military a fraction of its former strength, and that in concert with the international community he can be contained until, in the way of all petty dictators, he falls away into the dustbin of history.”

“I know that even a successful war against Iraq will require a U. S. occupation of undetermined length, at undetermined cost, with undetermined consequences,” Obama continued. “I know that an invasion of Iraq without a clear rationale and without strong international support will only fan the flames of the Middle East, and encourage the worst, rather than best, impulses of the Arab world, and strengthen the recruitment arm of al-Qaeda.”
The war with Iraq began in 2003 and Obama decided to run for the U.S. Senate open seat vacated by Republican Peter Fitzgerald. In the 2004 Democratic primary, he won 52 percent of the vote, defeating multimillionaire businessman Blair Hull and Illinois Comptroller Daniel Hynes.

That summer, he was invited to deliver the keynote speech in support of John Kerry at the 2004 Democratic National Convention in Boston. Obama emphasized the importance of unity, and made veiled jabs at the Bush administration and the diversionary use of wedge issues.

“We worship an awesome God in the blue states, and we don’t like federal agents poking around our libraries in the red states,” he said. “We coach Little League in the blue states, and yes, we’ve got some gay friends in the red states. There are patriots who opposed the war in Iraq, and there are patriots who supported the war in Iraq. We are one people, all of us pledging allegiance to the Stars and Stripes, all of us defending the United States of America.”

After the convention, Obama returned to his U.S. Senate bid in Illinois. His opponent in the general election was suppose to be Republican primary winner Jack Ryan, a wealthy former investment banker. However, Ryan withdrew from the race in June 2004, following public disclosure of unsubstantiated sexual allegations by Ryan’s ex wife, actress Jeri Ryan.

In August 2004, diplomat and former presidential candidate Alan Keyes, who was also an African American, accepted the Republican nomination to replace Ryan. In three televised debates, Obama and Keyes expressed opposing views on stem cell research, abortion, gun control, school vouchers and tax cuts.

In the November 2004 general election, Obama received 70% of the vote to Keyes’s 27%, the largest electoral victory in Illinois history. Obama became only the third African American elected to the U.S. Senate since Reconstruction.

Sworn into office January 4, 2005, Obama partnered with Republican Sen. Richard Lugar of Indiana on a bill that expanded efforts to destroy weapons of mass destruction in Eastern Europe and Russia. Then with Republican Sen. Tom Corburn of Oklahoma, he created a website that tracks all federal spending.

Obama was also the first to raise the threat of avian flu on the Senate floor, spoke out for victims of Hurricane Katrina, pushed for alternative energy development and championed improved veterans´ benefits. He also worked with Democrat Russ Feingold of Wisconsin to eliminate gifts of travel on corporate jets by lobbyists to members of Congress.

His second book, The Audacity of Hope: Thoughts on Reclaiming the American Dream, was published in October 2006.

In February 2007, Obama made headlines when he announced his candidacy for the 2008 Democratic presidential nomination. He was locked in a tight battle with former first lady and current U.S. Senator from New York, Hillary Rodham Clinton until he became the presumptive nominee on June 3, 2008.

Obama met his wife, Michelle, in 1988 when he was a summer associate at the Chicago law firm of Sidley & Austin. They were married in October 1992 and live in Kenwood on Chicago’s South Side with their daughters, Malia (born 1998) and Sasha (born 2001).

© 2008 A&E Television Networks. All rights reserved.

tulisan ini berdasarkan:http://www.biography.com/featured-biography/barack-obama/index.jsp

Metodologi Penelitian Kajian Teknik Industri

Saat seorang mahasiswa akan mmambuat TUGAS AKHIR, maka permasalahan yang pertama kali adalah bagaimana mendapatkan topik yang baik. Pada Kenyataan yang ada terdapat dua jenis aktivitas yang dilakukan oleh mahasiswa yaitu mencari topik dengan kajian yang telah dikuasai dan mencari topik dan berusaha menyelesaikan persoalan tersebut dengan disiplin ilmu yang dikuasai. Mana yang benar ??

SEKILAS TENTANG PEMBUATAN KUESIONER

Kuesioner adalah salah satu alat yang digunkan untuk menhumpulkan data. Kuesioner biasanya berupa pertanyaan tertulis yang diberikan kepada responden untuk dijawab.

Berikut ini langkah-langkah yang digunakan untuk merancang sebuah kuesioner: 1. menentukan persoalan apa yang ingin diidentifikasi?

2. desain kuesioner harus bisa menjembatani antara peneliti dengan respndennya. Dalam kata lain, bahasa yang digunkan harus disesuaikan dengan responden yang akan diteliti.

Tahap-tahap yang dilakukan pada saat membuat kuesioner dibagi menjadi dua, yang pertama hádala tahap formulir. Tahap formulir biasanya berisi variable non laten atau variable yang langsung bisa diidentifikasi. Tahap kedua adalah tahap instrument, tahap instrument berisi variable laten atau variable yang tidak bisa langsung diidentifikasi.

  • Tahap formulir

# Jumlah pertanyaan secukupnya, memperhitungkan waktu pengisiannya

# Biasanya berisi: Nama, jenis kelamin, usia, tinggi, dll

  • Tahap instrument

* Pertanyaan disesuaikan dengan data yang diperlukan

* Pertanyaan yang umum sebaiknya diletakkan di depan, pertanyaan yang khusus di belakang.

* Desain pertanyaan dibuat sesingkat mungkin

Tipe pertanyaan:

  • Terbuka

Pertanyaan yang bersifat terbuka, jika responden bisa memberikan opininya dalam menjawab pertanyaan

  • Tertutup

Pertanyaan yang bersifat tertutup, biasanya berupa check point atau sudah ada jawabanya

Setelah pertanyaan selesai dibuat, maka tahap selanjutnya adalah menyebarkan kuesioner ke responden yang akan diamati. Sebuah kuesiner dikatakan valid jika pertanyaannya mampu mengukur apa yang seharusnya diukur. Sebuah hasil dari kuesioner yang valid, jika mampu memberikan hasil yang konsisten.

hanya sebuah test…….

ok

ok

hai……

ketika pandangan akan sesuatu menjadi berubah….

ketika menggunakan kacamata…….

salam kenal……

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