Question: Consider the following data:

12, 12, 12, 16, 16, 17, 17, 17, 22, 22, 21, 18, 18

The mode(s) of this data is/are

Answer: 12, 17

Question: Consider these data, which are test scores out of 40 possible possible points.12, 10, 22, 18, 30, 14, 38, 17, 38, 28

Which number below is the mean (x-bar)?

Answer: 22.7

Question: The median of a data set is useful because

Answer: It minimizes the effects of outlier (extreme values) data.

Question: Consider these data, which are test scores out of 40 possible possible points.12, 10, 22, 18, 30, 14, 38, 17, 38, 28

What is the median?

Answer: 20

Question: Consider these data, which are test scores out of 40 possible possible points.12, 10, 22, 18, 30, 14, 38, 17, 38, 28

What is the standard deviation?

Answer: 10.3

Question: The mean is best used as a measure of central tendency when

Answer: There are NO outliers (extreme values) in the data.

Question: Confounding variables are also known as

Answer: a. Extraneous variables

b. Control variables

c. Intervening variables

d. Hidden variables

e. All of the above!

Question: An Independent variable is…

Answer: predicts the outcome you are trying to study.

Question: Consider these data, which are test scores out of 40 possible possible points.12, 10, 22, 18, 30, 14, 38, 17, 38, 28

What is the mode?

Answer: 38

Question: Regarding the syllabus, how many midterm tests are there in IBUS 620 online edition?

Answer: Three (3)