Quiz about Central Tendencies

Question 1

What is the median?

Accepted Answer

The number in the middle.

Answer

The greatest number - the least number

Answer

The average

Answer

The number that appears most often.

Question 2

To find the average of a set of numbers, add up all the items and divide by...

Accepted Answer

The number of items in the set.

Answer

2.

Answer

The smallest number

Answer

The largest number

Question 3

What is the range?

Accepted Answer

The largest number - the smallest number

Answer

The average

Answer

The number in the middle

Answer

The number that appears most often

Question 4

In order to find the median, the data must be sorted from least to greatest first.

Accepted Answer

True

Answer

False

Question 5

When you are trying to find the MEDIAN of a set of data and 2 numbers are left in the middle after putting them in order from least to greatest, what do you do?

Accepted Answer

Add the two numbers together and divide by 2.

Answer

List both of the numbers as the Median.

Answer

Pick the one that you want.

Answer

Subtract the two numbers.

Question 6

Dr. Dre is a dentist. He needs to report on the average number of cavities that his patients have.
1, 0, 1, 5, 0, 3, 4. What is the average number of cavities?

Accepted Answer

2

Answer

14

Answer

7

Answer

1

Question 7

The heights of some students are given.
158cm 172cm 164cm
164cm 167cm 159cm
What is the range of the heights?

Accepted Answer

14 cm

Answer

13 cm

Answer

330 cm

Answer

164 cm

Question 8

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?

Accepted Answer

66

Answer

193

Answer

127

Answer

60

Question 9

A data set can have more than one median?

Accepted Answer

False

Answer

True

Question 10

Which number is not the mean, median or range of the data set 4, 3, 15, 11, 3, 8, 7, 5?

Accepted Answer

11

Answer

6

Answer

12

Question 11

The football team had the following gains and losses during their last run:

-9, 8, 7, -4, 3 . What is their MEAN of their runs?

Accepted Answer

1

Answer

5

Answer

17

Answer

0

Question 12

The football team had the following gains and losses during their last run:

-9, 8, 7, -4, 3 . What is their MEDIAN of their runs?

Accepted Answer

3

Answer

7

Answer

8

Answer

-4

Question 13

The football team had the following gains and losses during their last run:

-9, 8, 7, -4, 3 . What is their RANGE of their runs?

Accepted Answer

17

Answer

-17

Answer

1

Answer

-1

Question 14

While deep-sea diving, an explorer swam the following yards:

-30, 20, -15, 5 . What was her MEAN?

Accepted Answer

-5

Answer

17.5 yards

Answer

-10

Answer

5

Question 15

While deep-sea diving, an explorer swam the following yards:

-30, 20, -15, 5 . What was her MEDIAN?

Accepted Answer

-5

Answer

17.5 yards

Answer

-10

Answer

5

Question 16

At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the mode:
12, 10, 10, 10, 13, 12, 11, 13, 10

Accepted Answer

10

Answer

13

Answer

12

Answer

11

Question 17

If you score 76, 85, 97, and 82 on your math tests, what would your average score be?

Accepted Answer

85

Answer

82

Answer

90

Answer

88

Question 18

What is the range of the data shown?

Accepted Answer

70

Answer

85

Answer

90

Answer

80

Question 19

What is the RANGE of this data

Accepted Answer

40

Answer

95

Answer

90

Answer

100

Question 20

What is the MODE of this data?

Accepted Answer

100

Answer

20

Answer

80, 85, and 90

Answer

none

Question 21

Which interval shows the greatest number of pets?

Accepted Answer

15-19

Answer

0-4

Answer

5-9

Answer

10-14

Question 22

How many students scored more than 80%?

Accepted Answer

13

Answer

10

Answer

7

Answer

15

Question 23

Austin hit some home runs in a game.  He hit 9, 11, 12, and 8.  He wants his mean to be 10.  How many will he need in the next game?

Accepted Answer

10

Answer

40

Answer

50

Answer

3

Question 24

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 could be incorrect and would influence the mean too much.

Answer

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

Answer

Mean, because there is not an outlier.  You should always use the mean.

Answer

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

Question 25

What is the mode in the following numbers? [3, 24, 3, 7, 30, 1, 3, 7, 3]

Accepted Answer

3 only

Answer

3 and 7 both are modes

Answer

1 and 7 both are modes

Answer

7 only

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