1- Intro to Stats

Question 1

steps of experiment

Answer 1

step 1: experiment
step 2: descriptive statistics
step 3: inferential statistics

Question 2

experimental methods

Answer 2

results allow for cause-and-effect relationships- containing manipulation and control

Question 3

non-experimental method

Answer 3

results do not permit a cause and effect relation (groups are not selected by experimenter)

Question 4

discrete variable

Answer 4

separate, distinct categories (ex: cat and dogs- no other category)

Question 5

continuous variable

Answer 5

contains infinite number of possible values (ex: height, 6, 6.1, 6.09)

Question 6

measurement scale: nominal scale

Answer 6

a set of categories that have different names, but one is not greater than the other (ex: living in city, suburb, town)

Question 7

measurement scale: ordinal scale

Answer 7

a set of categories that are organized in an ordered sequence- but you do not know differences between categories (is 1 and 2, the same as 4 and 5?) ex: very unsatisfied, unsatisfied, satisfied, very satisfied

Question 8

measurement scale: interval scale

Answer 8

ordered categories that are intervals of the exact same size, zero point is arbitrary (ex: temp of 0 does not = no degrees)

Question 9

measurement scale: ratio scale

Answer 9

a interval scale with the additional feature of an absolute zero point (ex: weight, 0 pounds, 1 pound, 40 pounds)

Question 10

The greek letter sigma, ∑ stands for “___________”.

Answer 10

The greek letter sigma, ∑ stands for “the sum of”.