Question 1

What does the term bimodal mean?

Accepted Answer

Bimodal refers to a distributi

Question 2

Which of the following is NOT a measure of central tendency?

Accepted Answer

A) median 
B) mode 
C) standard deviation 
D) mean 
A) median 
B) mode 
C) standard deviation 
D) mean

Question 3

Why is the mean the most frequently used measure of central tendency?

Accepted Answer

When the distribution of score

Question 4

This measure of central tendency can be considered the least precise.

Accepted Answer

A) median 
B) mode 
C) mean 
D) other 
A) median 
B) mode 
C) mean 
D) other

Question 5

What is the median for the following amounts: $13,400; $17,560; $45,440; $68,550; $96,400?

Accepted Answer

A) $13,400 
B) $48,240 
C) $45,440 
D) $96,400 
A) $13,400 
B) $48,240 
C) $45,440 
D) $96,400

Question 6

The nominal level can be the least precise level of measurement.

Accepted Answer

A) True 
 B)False

Question 7

What does the large N represent?

Accepted Answer

A) sample size 
B) population size 
C) sum of scores 
D) mean score 
A) sample size 
B) population size 
C) sum of scores 
D) mean score

Question 8

What impact do extreme scores have on the median?

Accepted Answer

A) positive skew 
B) negative skew 
C) minimal impact 
D) nullify the value 
A) positive skew 
B) negative skew 
C) minimal impact 
D) nullify the value

Question 9

Your current exam mean is 97.2.If you receive a 99 on the next exam, this will have the effect of ______.

Accepted Answer

A) increasing your mean 
B) decreasing your mean 
C) having no effect on your mean 
D) cannot be determined 
A) increasing your mean 
B) decreasing your mean 
C) having no effect on your mean 
D) cannot be determined

Question 10

What would be your preferred measure of central tendency if you had the following data: 23 Americans, 57 Mexicans, and 14 Canadians?

Accepted Answer

A) mean 
B) weighted mean 
C) median 
D) mode 
A) mean 
B) weighted mean 
C) median 
D) mode

Question 11

This consists of the middle point of a set of values:

Accepted Answer

A) mean 
B) median 
C) mode 
D) other 
A) mean 
B) median 
C) mode 
D) other

Question 12

What is the 25th percentile also known as?

Accepted Answer

A) Q1 
B) Q2 
C) Q3 
D) Q4 
A) Q1 
B) Q2 
C) Q3 
D) Q4

Question 13

What does the term skew mean?

Accepted Answer

A) significantly distort 
B) divide 
C) add 
D) equalize 
A) significantly distort 
B) divide 
C) add 
D) equalize

Question 14

If ΣX= 4,390 and n = 4, what is M?

Accepted Answer

A) 17,560 
B) .0100 
C) 1097.5 
D) Need more information 
A) 17,560 
B) .0100 
C) 1097.5 
D) Need more information

Question 15

This is calculated by multiplying values by the frequency of their occurrence, adding the total of all the products, and then dividing by the total number of occurrences.

Accepted Answer

A) mean 
B) arithmetic mean 
C) mode 
D) weighted mean 
A) mean 
B) arithmetic mean 
C) mode 
D) weighted mean

Question 16

Nominal levels of measurements have categories that are not mutually exclusive.

Accepted Answer

A) True 
 B)False

Question 17

When might the median be the more appropriate measure of central tendency over the mean?

Accepted Answer

When there are extreme scores

Question 18

If a distribution is "significantly distorted," what is this called?

Accepted Answer

A) variability 
B) outliers 
C) skew 
D) percentile 
A) variability 
B) outliers 
C) skew 
D) percentile

Question 19

What is the median of the following set of scores: 23, 17, 15, 32, 38, 47?

Accepted Answer

A) 23 
B) 32 
C) 17.4 
D) 27.5 
A) 23 
B) 32 
C) 17.4 
D) 27.5

Question 20

What should be used to determine central tendency?

Accepted Answer

A) a correlation 
B) a graph 
C) the standard deviation 
D) the average 
A) a correlation 
B) a graph 
C) the standard deviation 
D) the average

Exam 2: Means to an End: Computing and Understanding Averages

What does the term bimodal mean?

Which of the following is NOT a measure of central tendency?

Why is the mean the most frequently used measure of central tendency?

This measure of central tendency can be considered the least precise.

What is the median for the following amounts: $13,400; $17,560; $45,440; $68,550; $96,400?

The nominal level can be the least precise level of measurement.

What does the large N represent?

What impact do extreme scores have on the median?

Your current exam mean is 97.2.If you receive a 99 on the next exam, this will have the effect of ______.

What would be your preferred measure of central tendency if you had the following data: 23 Americans, 57 Mexicans, and 14 Canadians?

This consists of the middle point of a set of values:

What is the 25th percentile also known as?

What does the term skew mean?

If ΣX= 4,390 and n = 4, what is M?

This is calculated by multiplying values by the frequency of their occurrence, adding the total of all the products, and then dividing by the total number of occurrences.

Nominal levels of measurements have categories that are not mutually exclusive.

When might the median be the more appropriate measure of central tendency over the mean?

If a distribution is "significantly distorted," what is this called?

What is the median of the following set of scores: 23, 17, 15, 32, 38, 47?

What should be used to determine central tendency?

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