Characteristics
Applying the Percentage Rule
Standard Deviation and Variance
Measures of Central Tendency
100
The shape of the graph of a normal distribution is this.
Bell Curve
100
A normal distribution has a mean of 8 and a standard deviation of 2. The value that is 2 positive standard deviations away from the mean is this
12
100

What is standard deviation?

The distance of a set of data points from the mean or how we measure the spread of the data.

100

Find the median of the following data: 16, 17, 14, 26, 20

17

200
This measure of central tendency of a normal distribution represents the highest point on the curve
The Mean
200
A normal distribution has a mean of 15 and a standard deviation of 3. The value that is 3 negative standard deviations away from the mean is this
6
200

What is the S.D. if the variance is 9?

3

200

Find the range of the following data: 16, 14, 17, 20, 26

12
300
These percentages roughly represent the percent of the data values that fall within one, two, and three standard deviations from the mean of a normal distribution.
68% 95% 99.7%
300
A normal distribution has a mean of 10 and a standard deviation of 1. The percentage of data values that fall between the values of 8 and 12 is this
95%
300

Set A: 3, 4, 5, 6, 2, 3, 4 Set B: 3, 6, 8, 9, 1, 9, 1 Which data set would have the smaller standard deviation? How can you tell? (no calculations needed)

Set A because the numbers are closer together

300

Find the midrange of the following data: 20, 26, 14, 16, 17

20

400
The curve is this with respect to its mean
Symmetric
400
A normal distribution has a mean of 24 and a standard deviation of 6. 68% of the values of this distribution fall between what two data values?
18 and 30
400

What is the variance if the S.D. is 6?

36

400

What type of mode does the following data have? 

14, 16, 17, 20, 26

No mode

500
The total area under the curve of a normal distribution is this.
One or 100%
500
A normal distribution has a mean of 100 and a standard deviation of 10. The percentage of data values that fall between the values of 70 and 90 is this
15.85
500

What type of mode does the following data have? 

14, 16, 17, 20, 26, 16, 17, 14, 20

Multi-modal

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