stats week 1

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8 Terms

1
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population

the entire group that you want to draw conclusions about (ucsb students)

2
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sample

the subset of the population that you are drawing data from (200 ucsb students)

3
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study element

the basic unit of measurement (1 ucsb student)

4
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nominal measurement

  • categories with no order

  • can only calculate mode

    • ex: hair color (black, brunette, blonde)

5
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ordinal measurement

  • categories that have an order

  • distance between categories is unequal/unknown

  • calculate median, mode

    • ex: education level HS→ AA→ BA→ Ma→ PhD (they are separated and in order, but there is a different amount of years in between each)

6
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interval measurement

  • ordered values with equal spacing

  • no true zero (zero does not mean none)

  • ex: temperature, likert scale questions

  • calculate mean, median, mode

7
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ratio measurement

  • ordered values with equal spacing

  • true zero (zero means none)

  • ex: annual income, age

    • calculate mean, median, mode

8
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operationalization

turning abstract theories into measurable observations (operationalization of creativity→ how many uses for a paperclip someone can think of in 3 minutes)