Question 1

Which values divide a rank-ordered set into ten equal parts?

Accepted Answer

Deciles

Answer

Quartiles

Answer

Percentiles

Answer

Median

Question 2

Which values divide a rank-ordered set into 100 equal parts?

Accepted Answer

Percentiles

Answer

Deciles

Answer

Median

Answer

Quartiles

Question 3

The mean, median, and mode are called_____.

Accepted Answer

Measures of Central Tendency

Answer

Measures of Variability

Answer

Measures of Dispersion

Answer

Measures of Position

Question 4

Which is equivalent to the third quartile?

Accepted Answer

75th percentile

Answer

50th percentile

Answer

25th percentile

Answer

99th percentile

Question 5

It is frequently used to report results from national standardized test such as NAT, LET, NCAE, etc.

Accepted Answer

Percentiles

Answer

Quartiles

Answer

Deciles

Answer

Median

Question 6

In how many equal parts do deciles seperate the original set of data?

Accepted Answer

10

Answer

2

Answer

4

Answer

100

Question 7

Which does NOT belong to the group?

Accepted Answer

3rd quartile

Answer

2nd quartile

Answer

5th decile

Answer

50th percentile

Question 8

Data or information that has not been processed in any way are called_____.

Accepted Answer

Raw data

Answer

Frequency

Answer

Range

Answer

Processed data

Question 9

To which does the median correspond?

Accepted Answer

P50, Q2, D5

Answer

P60, Q3, D5

Answer

P50, Q3, D6

Answer

P25, Q1, D3

Question 10

If a distribution is split into 10 parts, which represents the 5th decile?

Accepted Answer

The value below in which 5/10 of the values lie.

Answer

The value below in which 2/10 of the values lie.

Answer

The value below in which 9/10 of the values lie.

Answer

The value below in which 1/10 of the values lie.

Question 11

It is the difference between the first and the third quartiles.

Accepted Answer

Interquartile range

Answer

Range

Answer

Mean

Answer

Median

Question 12

In grouped data, classes may overlap.

Accepted Answer

True

Answer

Cannot be determined.

Answer

Maybe

Answer

False

Question 13

What abbreviations are used for the first, second, and third quartiles?

Accepted Answer

Q1, Q2, Q3

Answer

X1, X2, X3

Answer

D1, D2, D3

Answer

P1, P2, P3

Question 14

What is the first step in getting the 4th decile of an ungrouped data?

Accepted Answer

Write the scores in order from least to greatest.

Answer

Subtract the lowest score from the highest score.

Answer

Divide the scores into four groups.

Answer

Find the median of the given scores.

Question 15

For ungrouped data, the formula for getting the location or position of the 60th percentile is:

Accepted Answer

$P_{60}\ =\ \frac{60\ \left(n+1\right)}{100}$

Answer

$P_{60}\ =\ \frac{60\ \left(n+1\right)}{100}$

Answer

$P_{60}\ =\ \frac{60\ \left(n+1\right)}{100}$

Answer

$P_{60}\ =\ \frac{60\ \left(n+1\right)}{100}$

Question 16

Find the second quartile for the following scores:2, 3, 4, 6, 6, 8, 8, 9, 9, 10, 13, 15, 16

Accepted Answer

8

Answer

6.5

Answer

13

Answer

4

Question 17

What is Q3 for this data set? 84.60, 87.03, 94.40, 94.80, 95.05

Accepted Answer

94.93

Answer

94.5

Answer

84.60

Answer

87.03

Question 18

Find the percentile rank for a score of 75 in the Final Exam.62, 66, 71, 75, 76, 78, 81, 83, 84, 85, 85, 87, 89, 89, 91, 92, 93, 94, 95, 99

Accepted Answer

15%

Answer

85%

Answer

20%

Answer

25%

Question 19

In a 70-item test, Sarah got a score of 50 which is the third quartile. This means that:

Accepted Answer

She surpassed 75% of his classmates.

Answer

She got the highest score.

Answer

Seventy-five percent of the class did not pass the test.

Answer

Her score is higher than 25% of his classmates.

Question 20

The heights of 15 students in inches are 55, 59, 59, 60, 61, 63, 64, 64, 65, 68, 68, 69, 72, 74, and 77. What is the percentile rank for a height of 72 inches?

Accepted Answer

80%

Answer

75%

Answer

70%

Answer

85%

Question 21

For a set of data, the 75th percentile is 80. Which is FALSE?

Accepted Answer

75% of the scores is 80

Answer

75% of the scores is 80 or less

Answer

One-fourth of the scores is greater than or equal to 80

Answer

The median is less than 80

Question 22

If your score on a test is equal to the median of the scores, what percentile rank is your score?

Accepted Answer

50%

Answer

75%

Answer

10%

Answer

100%

Question 23

May took a history exam and received a score of 27 out of 50. If out of 32 students in the class she stood 29th, what is her percentile rank?

Accepted Answer

9.38%

Answer

27%

Answer

29%

Answer

90.63%

Question 24

May took a history exam and received a score of 27 out of 50. Out of 32 students in the class, she stood 29th. What information is NOT needed if you are to solve for her percentile rank?

Accepted Answer

score of 27 out of 50

Answer

32 students

Answer

29th

Answer

27%

Question 25

In a 100-item test, the passing mark is the third quartile. What does this imply?

Accepted Answer

The students should answer at least 75 items correctly to pass the test.

Answer

The students should answer at most 75 items correctly to pass the test.

Answer

The students should answer at most 50 items correctly to pass the test.

Answer

The students should answer at least 50 items correctly to pass the test.

Question 26

If exactly three-quarters of your class scored higher than you did on a test, what is your percentile ranking?

Accepted Answer

25%

Answer

75%

Answer

100%

Question 27

The test scores for a class of 101 students are computed. What is the location of the test score associated with the second quartile?

Accepted Answer

51st

Answer

25th

Answer

75th

Answer

80th

Question 28

The test scores for a class of 50 students are computed. What is the location of the test score associated with the third decile?

Accepted Answer

15th

Answer

10th

Answer

20th

Answer

5th

Question 29

Paolo took the Statistics test and his teacher told him that he scored at the 92nd percentile. Should Paolo be pleased with his performance on the test?

Accepted Answer

Yes

Answer

No

Answer

Do not know what to feel

Answer

Maybe

Question 30

Micah took a placement test in order to be accepted into a computer course. Out of 760 students who took the test, her score was 48th from the highest. How many students had higher scores than she had?

Accepted Answer

47

Answer

760

Answer

92

Answer

713

Question 31

Micah took a placement test in order to be accepted into a computer course. Out of 760 students who took the test, her score was 48th from the highest. How many students achieved either the same score or less than Micah did?

Accepted Answer

713

Answer

47

Answer

760

Answer

92

Question 32

There are 25 students in Carlos's karate class. On the first evaluation of the student's skills, 17 students scored lower than Carlo, and 7 scored higher. What is Carlo's percentile ranking?

Accepted Answer

68%

Answer

28%

Answer

17%

Answer

72%

Question 33

There are 25 students in Carlos's karate class. On the first evaluation of the student's skills, 17 students scored lower than Carlo, and 7 scored higher. Suppose the instructor decided to add five points to everyone's score, how would this affect Carlo's percentile rank?

Accepted Answer

His percentile rank will be the same.

Answer

His percentile rank will be twice.

Answer

His percentile rank will be increased by 5.

Answer

His percentile rank will be decreased by 5.

Question 34

There are 25 students in Carlos's karate class. On the first evaluation of the student's skills, 17 students scored lower than Carlo, and 7 scored higher. What conclusion can you make about Carlo's score?

Accepted Answer

A student who scored higher than Carlo did better than 68% of the class.

Answer

A student who scored lower than Carlo did better than 28% of the class.

Answer

A student who scored higher than Carlo did better than 72% of the class.

Answer

A student who scored lower than Carlo failed the test.

Question 35

The following data are the scores of 40 students in a 60-item Statistics test. Which interval contains the third quartile?

Accepted Answer

45-49

Answer

35-39

Answer

50-54

Answer

30-34

Question 36

If students who received at least 85% on this exam received an award, what percent of the students were awarded?

Accepted Answer

22.5%

Answer

24.5%

Answer

23.5%

Answer

21.5%

Question 37

What is the upper boundary of the interval containing the third quartile?

Accepted Answer

49.5

Answer

44.5

Answer

29.5

Answer

34.5

Question 38

What is the class size?

Accepted Answer

5

Answer

4

Answer

6

Answer

7

Question 39

What is the frequency of the interval containing the 50th percentile?

Accepted Answer

9

Answer

7

Answer

4

Answer

6

Question 40

What is the cumulative frequency before the third quartile?

Accepted Answer

24

Answer

31

Answer

15

Answer

37

Question 41

The following data represents the heights (in inches) of 14 Grade 7 students.65, 63, 68, 59, 74, 59, 68, 61, 64, 60, 69, 72, 55, 64. What is the median score?

Accepted Answer

64

Answer

65

Answer

63

Answer

64.5

Question 42

The following data represents the heights (in inches) of 14 Grade 7 students.65, 63, 68, 59, 74, 59, 68, 61, 64, 60, 69, 72, 55, 64. What is the position of D6?

Accepted Answer

9

Answer

10

Answer

8

Answer

11

Question 43

The following data represents the heights (in inches) of 14 Grade 7 students.65, 63, 68, 59, 74, 59, 68, 61, 64, 60, 69, 72, 55, 64. Using linear interpolation, solve for the value of P75.

Accepted Answer

68.25

Answer

67.25

Answer

68.75

Answer

67.50

Question 44

The following data represents the heights (in inches) of 14 Grade 7 students.65, 63, 68, 59, 74, 59, 68, 61, 64, 60, 69, 72, 55, 64. What is the percentile rank of the height of a student who is 5 feet 5 inches (to the nearest whole number)?

Accepted Answer

57%

Answer

58%

Answer

59%

Answer

56%

Question 45

Twenty-five candidates for college took an examination. An analysis of the distribution of the marks of these candidates provided the following information.

The lowest score was 10.

The highest score was 90.

The upper quartile was 60.

The interquartile range was 28.

What is the first quartile of this distribution?

Accepted Answer

32

Answer

91

Answer

10

Answer

28

Question 46

Twenty-five candidates for college took an examination. An analysis of the distribution of the marks of these candidates provided the following information.

The lowest score was 10.

The highest score was 90.

The upper quartile was 60.

The interquartile range was 28.

What is the position of the 90th percentile of the scores (to the nearest whole number)?

Accepted Answer

23

Answer

24

Answer

21

Answer

22

Question 47

Twenty-five candidates for college took an examination. An analysis of the distribution of the marks of these candidates provided the following information.

The lowest score was 10.

The highest score was 90.

The upper quartile was 60.

The interquartile range was 28.

What is the position of the 5th decile?

Accepted Answer

13

Answer

12

Answer

15

Answer

14

Question 48

The table shows the distribution of scores in a Geometry test given to 40 students. Find the position and value of the 75th percentile.

Accepted Answer

Position: 30 Value: 78.53

Answer

Position: 30 Value: 75.83

Answer

Position: 30 Value: 78.35

Answer

Position: 30 Value: 75.38

Question 49

The table shows the distribution of scores in a Geometry test given to 40 students. If the passing score is 70, how many failed the test?

Accepted Answer

13

Answer

27

Answer

15

Answer

14

Question 50

The table shows the distribution of scores in a Geometry test given to 40 students. What percent of the students got a score of 84 and above?

Accepted Answer

12.5%

Answer

13.5%

Answer

11.5%

Answer

14.5%

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