Question 1

The finding that "the longer a person smokes cigarettes, the shorter the life expectancy" is an example of:

1. a spurious correlation
2. a positive correlation
3. no correlation
4. a negative correlation

Question 2

1. In a scatterplot, the vertical axis represents the:
2. the mode
3. the value of Y
4. the value of X
5. frequency

Question 3

We use the symbol ___________ to represent the correlation coefficient obtained if Pearson's correlation coefficient were to be computed for the entire population.

1. t
2. Z
3. r
4. rho

Question 4

In a study of hospitals, the variable "number of nurses on staff" would be measured at what level of measurement?

1. interval/ratio
2. nominal
3. not enough information to answer
4. ordinal

Question 5

A researcher is examining the relationship between political preferences (conservative, moderate, liberal) and attitudes toward legislation of recreational marijuana use in a sample of college undergraduate students. The variable political preference is:

Group of answer choices

1. the control groups
2. the dependent variable
3. a constant
4. the independent variable

Question 6

A ________ is a prediction about the relationship between two variables, asserting that differences among the measurements of an independent variable will correspond to differences among the measurements of a dependent variable.

1. hypothesis
2. strength statistic
3. scientific theory
4. sampling distribution

Question 7

In a study of social inequality, the variable "social class" (lower, middle, and upper) would have what level of measurement?

1. ordinal
2. interval/ratio
3. not enough information to answer
4. nominal

Question 8

Your state of residence (1 = Alabama, 2 = Alaska, etc.) would have what level of measurement?

1. ordinal
2. interval/ratio
3. not enough information to answer
4. nominal

Question 9

A mathematical description of all possible sampling event outcomes and the probability of each is called

Question 10

To draw a conclusion about a population on the basis of a sample statistic is called:

1. statistical ideal
2. none of these answers
3. statistical inference
4. mistake
5. statistical error