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Standard Deviation and Variance

Authored by Barbara White

Mathematics

9th - 12th Grade

Used 1+ times

Standard Deviation and Variance
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

To find the _________ you add up all the numbers and then divide by how many numbers you have.

Mean
Median
Mode
Range

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The masses of six children are 34.5 kilograms, 42.6 kilograms, 39.8 kilograms, 40.1 kilograms, 53.4 kilograms, and 33.8 kilograms. Find the mean mass.

40.7 kg
40
41
50

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

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?

5
6
9
11

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

The number of miles that Jenna cycled each week for a 7-week period is shown: 
36, 42, 28, 52, 48, 36, 31 
What is the median number of miles Jenna cycled?

24
36
39
52

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is a measure of variability?

mean
median
mode
standard deviation

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

All of the below sets have the same mean.
Set 1-Standard Deviation=3.1
Set 2-Standard Deviation=4.9
Set 3-Standard Deviation=1.7
Set 4-Standard Deviation=3.2
Which set of data probably has the points closest to the mean?

1
2
3
4

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

This data is normally distributed.  What percent of the data is in the shaded region?

68%
95%
99.7%
50%

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