Module 2

Question 1

“Central tendency” is most closely associated with
A) Location
B) Tendency of scores to cluster about the center
C) Spread
D) Tendency of central scores to represent to group

Answer 1

A) Location

Question 2

The score point above and below which an equal number of cases fall.
A) Mode
B) Median
C) Mean

Answer 2

B) Median

Question 3

In the series of scores: 4, 4, 5, or 7, the number 4.5 is
A) Mode
B) Median
C) Mean

Answer 3

B) Median

Question 4

In the series of scores: 4, 4, 5, or 7, the number 4 is
A) Mode
B) Median
C) Mean

Answer 4

A) Mode

Question 5

The highest point of a frequency curve is most closely associated with
A) Mode
B) Median
C) Mean

Answer 5

A) Mode

Question 6

Several situations tend to make the median a more attractive choice than it might otherwise be. What is a situation that does not add to its attractiveness?
A) The distribution is open-ended
B) The distribution is skewed
C) A measure is wanted that reflects the position of every score

Answer 6

C) A measure is wanted that reflects the position of every score.

Question 7

The median of the following sample of scores: 2, 6, 3, 8, 3, 8 is
A) 5.5
B) 4.5
C) 4
D) 5

Answer 7

B) 4.5

Question 8

“Balance point” is to “highest point of curve” is to “half of area” as:
A) Median is to mean is to mode
B) Mode is to median is to mean
C) Mean is to mode is to median
D) Mean is to median is to mode

Answer 8

C) Mean is to mode is to median

Question 9

If one score in a distribution is changed to another value, it is certain that, according to raw score calculation
A) The mean has changed
B) The median has changed
C) Both mean and median have changed
D) The mode has changed

Answer 9

A) The mean has changed

Question 10

If scores are expressed in terms of the amount by which they deviate from a measure of their central tendency, the sum of the negative deviations will equal the sum of the positive deviations when deviations are taken about:
A) Mode
B) Median
C) Mean

Answer 10

C) Mean

Question 11

The measure of central tendency that may be considered as the “balance point” of the distribution is:
A) Mode
B) Median
C) Mean

Answer 11

C) mean

Question 12

In the series of scores: 4, 4, 5, 7, the number 5 is
A) Mode
B) Median
C) Mean

Answer 12

C) Mean

Question 13

List measures of central tendency

Answer 13

Mean, median, mode

Question 14

The mean of a distribution of scores for a very easy test is 24.3  Which of the following is most likely to be the median?
A) 24.3
B) 21.3
C) 26.2
D) 23.6

Answer 14

C) 26.2

Question 15

In a given distribution, the mean falls at P60.  The distribution is probably
A) A normal distribution
B) A Symmetrical distribution
C) Negatively skewed
D) Positively Skewed

Answer 15

D) Positively skewed

Question 16

If the mean is 130 and the median is 140, it seems likely that the distribution is probably
A) A normal distribution
B) A Symmetrical distribution
C) Negatively skewed
D) Positively Skewed

Answer 16

C) Negatively skewed

Question 17

Measures of central tendency differ in their resistance to sampling fluctuation.  From most resistant to least resistant, the order is:
A) Median, mean, mode
B) Mean, mode, median
C) Mode, mean, median
D) Mean, median, mode

Answer 17

D) Mean, median, mode

Question 18

The main advantage the arithmetic mean has over the median and mode has to do with:
A) Ease of computation
B) Sensitivity to extreme scores
C) Accuracy of results
D) Response to mathematical manipulation

Answer 18

D) Response to mathematical manipulation

Question 19

The mode is the most appropriate measure for
A) Skewed distributions
B) Flat distributions
C) Discrete data
D) Qualitative data

Answer 19

D) Qualitative data

Question 20

For a symmetric distribution of 10 scores the mean is calculated to be 32.6.  Later it is learned that John’s recorded score of 28 really should be a 35.  Correcting this error will change the calculated value of
A) The mean
B) The mean and the mode
C) The median and the mode
D) The mean and the median

Answer 20

D) The mean and the median