Basic Statistics Quiz

Question 1

What is the mode of this distribution?
1 2 2 2 2 4 5 5 7 8 9 10 10 22

Answer 1

2

Question 2

In a standard distribution, about ___% of the scores fall above the z-score of 3.00

Answer 2

0.13

Question 3

The percentile rank of the median is

Answer 3

50th

Question 4

The “arithmetical average” is another term for the

Answer 4

Mean

Question 5

If the mean is 3 and the standard deviation is 1, the z-score associated with a raw score of 4.5

Answer 5

is 1.50

Question 6

The sum of the difference of scores around the mean is:

Answer 6

0

Question 7

The descriptive statistic that eliminates the typical distance of any score from the mean is

Answer 7

standard deviation

Question 8

If the correlation between income level and charitable giving is 0.82, the relationship between income and donations to charities is

Answer 8

strong and positive

Question 9

A distribution with a shape that is symmetrical around the mean with a “bell” shape is described as

Answer 9

normal

Question 10

“Mental illness”, “ethnic background” and “political affiliation” are examples of ________ data.

Answer 10

Nominal