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TRUE/FALSEBehavioral Sciences 9th Edition Gravetter
1 : A student takes a 10-point quiz each week in statistics class. If the students quiz scores for
the first three weeks are 2, 6, and 10, then the mean score is M = 9.
A : true
B : false
Correct Answer : B
2 : A sample of n = 6 scores has X = 48. This sample has a mean of M = 8.
A : true
B : false
Correct Answer : A
3 : A sample of n = 8 scores has a mean of M = 16. For this sample, X = 2.
A : true
B : false
Correct Answer : B
4 : A sample with a mean of M = 20 has X = 120. There are n = 6 scores in the sample.
A : true
B : false
Correct Answer : A
5 : For the scores in the following frequency distribution table, the mean is M = 3. X f 4 1 3 4 2 2
A : true
B : false
Correct Answer : B
6 : The mean is considered to be the balance point for a distribution because exactly half of the
scores are located above the mean and exactly half are below the mean.
A : true
B : false
Correct Answer : B
7 : In a sample of n = 3 scores, if two scores are each below the mean by 2 points, then the
third score is above the mean by 4 points.
A : true
B : false
Correct Answer : A
8 : A sample has a mean of M = 40. If a new score of X = 35 is added to the sample, then the
sample mean would increase.
A : true
B : false
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BE Test Bank for Essentials of Statistics for The
Behavioral Sciences 9th Edition Gravetter
9 : A sample has n = 7 scores with a mean of M = 9. If one individual with a score of X = 3 is
removed from the sample, the new mean will be M = 10.
A : true
B : false
Correct Answer : A
10 : After adding 6 points to every score in a sample, the new mean is found to be M = 18. The
mean for the original sample was M = 24.
A : true
B : false
Correct Answer : B
11 : Adding a new score to a distribution will always change the value of the mean.
A : true
B : false
Correct Answer : B
12 : Changing the value of a score in a distribution will always change the value of the mean.
A : true
B : false
Correct Answer : B
13 : A sample of n = 6 scores has a mean of M = 9. If one individual with a score of X = 4 is
removed from the sample, the new mean will be M = 10.
A : true
B : false
Correct Answer : A
14 : A sample of n = 7 scores has a mean of M = 5. After one new score is added to the sample,
the new mean is calculated to be M = 6. The new score was X = 13.
A : true
B : false
Correct Answer : A
15 : A sample of n = 8 scores has a mean of M = 20. After one score is removed from the
sample, the mean is calculated to be M = 23. The removed score must have a value greater
than 20.
A : true
B : false
Correct Answer : B
16 : A sample of n = 10 scores has a mean of 50. A second sample has n = 5 scores and M=
60. If the two samples are combined, the combined sample mean will be greater than 55.
A : true
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, BD: Of aWl sNeL O A D THE Test Bank for Essentials of Statistics for The
Behavioral Sciences 9th Edition Gravetter
Correct Answer : B
17 : For a 100-point exam, a score of X = 65 is definitely above the median.
A : true
B : false
Correct Answer : B
18 : If a sample has an odd number of scores, at least one individual will have a score exactly
equal to the median.
A : true
B : false
Correct Answer : A
19 : A sample has n = 5 scores: 2, 4, 5, 8, and 11. The median for the sample is 6.5.
A : true
B : false
Correct Answer : B
20 : For any distribution of scores, at least one individual will have a score exactly equal to the
mean.
A : true
B : false
Correct Answer : B
21 : It is possible for a distribution to have more than one mode.
A : true
B : false
Correct Answer : A
22 : It is possible to have a distribution of scores where no individual has a score exactly equal
to the mode.
A : true
B : false
Correct Answer : B
23 : For a set of scores measured on an ordinal scale, the median is preferred to the mean as a
measure of central tendency.
A : true
B : false
Correct Answer : A
24 : There are situations for which it is either impossible to compute a mean or the mean does
not provide a central, representative value.
A : true
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TRUE/FALSEBehavioral Sciences 9th Edition Gravetter
1 : A student takes a 10-point quiz each week in statistics class. If the students quiz scores for
the first three weeks are 2, 6, and 10, then the mean score is M = 9.
A : true
B : false
Correct Answer : B
2 : A sample of n = 6 scores has X = 48. This sample has a mean of M = 8.
A : true
B : false
Correct Answer : A
3 : A sample of n = 8 scores has a mean of M = 16. For this sample, X = 2.
A : true
B : false
Correct Answer : B
4 : A sample with a mean of M = 20 has X = 120. There are n = 6 scores in the sample.
A : true
B : false
Correct Answer : A
5 : For the scores in the following frequency distribution table, the mean is M = 3. X f 4 1 3 4 2 2
A : true
B : false
Correct Answer : B
6 : The mean is considered to be the balance point for a distribution because exactly half of the
scores are located above the mean and exactly half are below the mean.
A : true
B : false
Correct Answer : B
7 : In a sample of n = 3 scores, if two scores are each below the mean by 2 points, then the
third score is above the mean by 4 points.
A : true
B : false
Correct Answer : A
8 : A sample has a mean of M = 40. If a new score of X = 35 is added to the sample, then the
sample mean would increase.
A : true
B : false
mynursytest.store
,CD
orOreWcNt L
AOnsAwDerT: H
BE Test Bank for Essentials of Statistics for The
Behavioral Sciences 9th Edition Gravetter
9 : A sample has n = 7 scores with a mean of M = 9. If one individual with a score of X = 3 is
removed from the sample, the new mean will be M = 10.
A : true
B : false
Correct Answer : A
10 : After adding 6 points to every score in a sample, the new mean is found to be M = 18. The
mean for the original sample was M = 24.
A : true
B : false
Correct Answer : B
11 : Adding a new score to a distribution will always change the value of the mean.
A : true
B : false
Correct Answer : B
12 : Changing the value of a score in a distribution will always change the value of the mean.
A : true
B : false
Correct Answer : B
13 : A sample of n = 6 scores has a mean of M = 9. If one individual with a score of X = 4 is
removed from the sample, the new mean will be M = 10.
A : true
B : false
Correct Answer : A
14 : A sample of n = 7 scores has a mean of M = 5. After one new score is added to the sample,
the new mean is calculated to be M = 6. The new score was X = 13.
A : true
B : false
Correct Answer : A
15 : A sample of n = 8 scores has a mean of M = 20. After one score is removed from the
sample, the mean is calculated to be M = 23. The removed score must have a value greater
than 20.
A : true
B : false
Correct Answer : B
16 : A sample of n = 10 scores has a mean of 50. A second sample has n = 5 scores and M=
60. If the two samples are combined, the combined sample mean will be greater than 55.
A : true
mynursytest.store
, BD: Of aWl sNeL O A D THE Test Bank for Essentials of Statistics for The
Behavioral Sciences 9th Edition Gravetter
Correct Answer : B
17 : For a 100-point exam, a score of X = 65 is definitely above the median.
A : true
B : false
Correct Answer : B
18 : If a sample has an odd number of scores, at least one individual will have a score exactly
equal to the median.
A : true
B : false
Correct Answer : A
19 : A sample has n = 5 scores: 2, 4, 5, 8, and 11. The median for the sample is 6.5.
A : true
B : false
Correct Answer : B
20 : For any distribution of scores, at least one individual will have a score exactly equal to the
mean.
A : true
B : false
Correct Answer : B
21 : It is possible for a distribution to have more than one mode.
A : true
B : false
Correct Answer : A
22 : It is possible to have a distribution of scores where no individual has a score exactly equal
to the mode.
A : true
B : false
Correct Answer : B
23 : For a set of scores measured on an ordinal scale, the median is preferred to the mean as a
measure of central tendency.
A : true
B : false
Correct Answer : A
24 : There are situations for which it is either impossible to compute a mean or the mean does
not provide a central, representative value.
A : true
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