Quiz about Reviewer 2

Question 1

The number of pages that Carolyn wrote in her journal each day from Monday to Friday is shown below:
9, 8, 12, 6, 10
What is the mean number of pages she wrote per day?

Accepted Answer

9

Answer

5

Answer

6

Answer

11

Question 2

What is the mode?

Accepted Answer

The value that occurs the most often in a data set

Answer

The middle number in an ordered set of data

Answer

The sum of all the numbers in a data set divided by the size

Answer

The sum of the between the greatest and the least elements, divided by two

Question 3

A data set can have more than one _______

Accepted Answer

Mode

Answer

Median

Answer

Mean

Answer

Midrange

Question 4

What is the mode?

4 , 8 , 5 , 17 , 5 , 4 , 9 , 5 , 6 , 82

Accepted Answer

5

Answer

4

Answer

9

Answer

6

Question 5

Which is the MIDDLE of an ordered set of data?

Accepted Answer

Median

Answer

Mean

Answer

Mode

Answer

Range

Question 6

Which is a synonym for "average?"

Accepted Answer

mean

Answer

median

Answer

mode

Answer

range

Question 7

If you score 76, 85, 97, and 83 on your math tests, what would your median score be?

Accepted Answer

84

Answer

90

Answer

85

Answer

88

Question 8

Find the mean of these numbers:
5, 11, 2, 12, 4, 2

Accepted Answer

6

Answer

4.1

Answer

4.5

Answer

4

Question 9

Question 9.

Accepted Answer

outlier

Answer

spread

Answer

mean

Answer

median

Question 10

How many students scored more than 80%?

Accepted Answer

13

Answer

10

Answer

7

Answer

15

Question 11

What do you do if there are two numbers in "the middle" when you are finding the median?

Accepted Answer

Add the two numbers in the middle & then divide by two.

Answer

Pick your favorite number

Answer

They are both the median

Answer

None of the above

Question 12

What measure of central tendency (mean, median or mode) would be best for the following set of data?

0, 89, 92, 97, 99, 100

Accepted Answer

Median, because there is an outlier. The outlier would influence the mean too much.

Answer

Mode, because it is the one that shows up the most.

Answer

Mean, because you should always use the mean.

Answer

There is not a best measure of central tendency for this data.

Question 13

The following data set represents the responses from students when they were asked how many siblings they had:

1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 4, 7

What is the average number of siblings for this set of students?

Accepted Answer

About 2.6

Answer

6

Answer

About 18

Answer

About 2.4

Question 14

An OUTLIER in a set of data is a number that is far away from the rest of the numbers.

Identify the OUTLIER in this data set.

5, 8, 10, 11, 15, 53

Accepted Answer

53

Answer

5

Answer

0

Answer

15

Question 15

Find the range of the data.

63, 71, 65, 66, 87, 53

Accepted Answer

34

Answer

32

Answer

33

Answer

35

Question 16

Find the range of the data.

63, 71, 65, 66, 87, 53

Accepted Answer

34

Answer

32

Answer

33

Answer

35

Question 17

Find the median, first quartile, third quartile, and interquartile range of the data.

32, 53, 72, 66, 47, 54, 49, 67, 71

Accepted Answer

Median: 54

First Quartile: 48

Third Quartile: 69

IQR: 21

Answer

Median: 54

First Quartile: 49

Third Quartile: 67

IQR: 18

Answer

Median: 54

First Quartile: 48

Third Quartile: 69

IQR: 22

Answer

Median: 54

First Quartile: 49

Third Quartile: 69

IQR: 20

Question 18

Find the median, first quartile, third quartile, and interquartile range of the data.

32, 53, 72, 66, 47, 54, 49, 67, 71

Accepted Answer

Median: 54

First Quartile: 48

Third Quartile: 69

IQR: 21

Answer

Median: 54

First Quartile: 49

Third Quartile: 67

IQR: 18

Answer

Median: 54

First Quartile: 48

Third Quartile: 69

IQR: 22

Answer

Median: 54

First Quartile: 49

Third Quartile: 69

IQR: 20

Question 19

Find the median, first quartile, third quartile, and interquartile range of the data.

23, 33, 25, 16, 27, 43, 29, 40, 35

Accepted Answer

Median: 29

First Quartile: 24

Third Quartile: 37.5

IQR: 13.5

Answer

Median: 27

First Quartile: 25

Third Quartile: 35

IQR: 10

Answer

Median: 29

First Quartile: 25

Third Quartile: 37.5

IQR: 12.5

Answer

Median: 27

First Quartile: 24

Third Quartile: 35

IQR: 11

Question 20

Find the lower quartile (Q1) of the following set of scores 6, 7, 8, 9, 11, 13, 15

Accepted Answer

7

Answer

13

Answer

9

Answer

6

Question 21

What is the standard deviation for the data given:

5, 10, 7, 12, 0, 20, 15, 22, 8, 2

Accepted Answer

7.26

Answer

6.89

Answer

10.1

Answer

9

Question 22

Question 22.

Accepted Answer

Skewed Right

Answer

Skewed Left

Answer

Uniform

Answer

Symmetric

Question 23

Question 23.

Accepted Answer

Uniform

Answer

Skewed Right

Answer

Skewed Left

Answer

Symmetric

Question 24

Question 24.

Accepted Answer

Symmetric

Answer

Skewed Right

Answer

Skewed Left

Answer

Uniform

Question 25

When a distribution is divided into hundred equal parts, each score point that describes the distribution is called a ___________.

Accepted Answer

percentile

Answer

decile

Answer

quartile

Answer

median

Question 26

The lower quartile is equal to ______________.

Accepted Answer

25th percentile

Answer

50th percentile

Answer

2nd decile

Answer

3rd quartile

Question 27

Rochelle got a score of 55 which is equivalent to 70th percentile in a mathematics test. Which of the following is NOT true?

Accepted Answer

Her score is below the 5th decile.

Answer

She scored above 70% of her classmates.

Answer

Thirty percent of the class got scores of 55 and above.

Answer

If the passing mark is the first quartile, she passed the test.

Question 28

In a 100-item test, the passing mark is the 3rd quartile. What does it imply?

Accepted Answer

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

Answer

The students should answer at least 50 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

Question 29

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

Accepted Answer

she surpassed 75% of her classmates.

Answer

she got the highest score.

Answer

her score is higher than 25% of her classmates.

Answer

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

Question 30

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

Accepted Answer

she surpassed 75% of her classmates.

Answer

she got the highest score.

Answer

her score is higher than 25% of her classmates.

Answer

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

Question 31

In a group of 55 examinees taking the 50-item test, Rachel obtained a score of 38. This implies that her score is ______________.

Accepted Answer

at the upper quartile

Answer

below the 50th percentile

Answer

the 55th percentile

Answer

below the 3rd decile

Question 32

Consider the score distribution of 15 students given below:

83, 72, 87, 79, 82, 77, 80, 73, 86, 81, 79, 82, 79, 74, 74.

The mean in the given score distribution of 15 students can also be interpreted as ______.

Accepted Answer

seven students scored higher than 79.

Answer

seven students scored lower than 79.

Answer

seven students scored lower than 79 and seven students scored higher than 79.

Answer

fourteen students scored lower than 79.

Question 33

Which of these fractiles divides the data set into four equal parts?

Accepted Answer

Quartile

Answer

Decile

Answer

Median

Answer

Percentile

Question 34

Which of these percentiles refer to the median?

Accepted Answer

P50

Answer

P10

Answer

P25

Answer

P75

Question 35

Which of these percentiles refer to the lower quartile?

Accepted Answer

P50

Answer

P10

Answer

P25

Answer

P75

Question 36

If a data set consists of 24 scores, which position is the median?

Accepted Answer

12th

Answer

5th

Answer

10th

Answer

12.5th

Question 37

What is the upper quartile in the distribution?

80, 85, 86, 90, 93, 95, 96

Accepted Answer

95

Answer

85

Answer

90

Answer

96

Question 38

What is the percentile rank of 87?

Given: 70, 75, 80, 86, 87, 91, 94, 95, 98, 98

Accepted Answer

40th

Answer

25th

Answer

50th

Answer

75th

Question 39

if Jose's score is at 95th percentile rank, what is the probability that a score randomly chosen is equal to or greater than Jose's score?

Accepted Answer

5

Answer

20

Answer

25

Answer

95

Question 40

What data value is the upper quartile (Q3)?

Accepted Answer

64

Answer

62

Answer

66

Answer

58

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