Standard Deviation, Chebyshev and Empirical Rules

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

Tags

CCSS.6.SP.A.3

CCSS.6.SP.A.2

CCSS.6.SP.B.5

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

• 68%
• 95%
• 99.7%
• 50%

Tags

CCSS.6.SP.A.2

CCSS.6.SP.B.4

What is the population standard deviation for the data given:

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

• 6.89

• 47.47

• 7.26

• 52.71

What does this symbol represent?

• Population Standard Deviation

• Population Variance

• Sample Standard Deviation

• Sample Variance

Which of the following is a measure of variability?

• mean
• median
• mode
• standard deviation

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

If the standard deviation of a data set is 4, what is the variance?

• 2
• 16
• 4

Tags

CCSS.6.SP.A.3

Describe the data distribution shape of the graph.

• Skewed right
• Skewed left
• Uniform
• Symmetrical

Describe the histogram:

• Left Skewed
• Symmetrical
• Right Skewed
• Uniform

Describe the shape of the graph.

• Skewed right
• Skewed left
• Uniform
• Symmetrical

In a factory, the weight of the concrete poured into a mold by a machine follows a symmetricall distribution with a mean of 1150 pounds and a standard deviation of 22 pounds. Approximately 95% of molds filled by this machine will hold weights in what interval?

• 1084 to 1216 pounds

• 1106 to 1150 pounds

• 1106 to 1194 pounds

• 1128 to 1172 pounds