2.1 Standard Deviation Practice

Standard deviation can be used to describe the _____

• Shape

• Outliers

• Spread of the data

• Center of the data

Tags

CCSS.6.SP.A.3

Standard deviation would be affected if an outlier was added to the data set.

• True
• False

The standard deviation is used to tell how far on average any data point is from the mean.

• True
• False

How would the standard deviation change if the "7" was replaced with a "15?"

• Increases

• Decreases

• Stays the same

Which data set would have a standard deviation of 0?

• {1, 2, 3, 4}

• {5, 5, 6, 6}

• {8, 8, 8, 8}

• {10, 14, 0, 2}

Here is a normal bell curve. 68% of data is within plus and minus how many standard deviations of the mean?

• Within 1 s.d.

• Within 2 s.d.

• Within 3 s.d.

• Within 4 s.d.

Tags

CCSS.HSS.ID.A.4

Here is a normal bell curve. 95% of data is within plus and minus how many standard deviations of the mean?

• Within 1 s.d.

• Within 2 s.d.

• Within 3 s.d.

• Within 4 s.d.

Tags

CCSS.HSS.ID.A.4

Here is a normal bell curve. 99.7% of data is within plus and minus how many standard deviations of the mean?

• Within 1 s.d.

• Within 2 s.d.

• Within 3 s.d.

• Within 4 s.d.

Tags

CCSS.HSS.ID.A.4

Based on this normal curve, what is the mean pizza delivery time?

• 5

• 15

• 30

• 35

Tags

CCSS.HSS.ID.A.4

Based on this normal curve, what is the standard deviation?

• 5

• 15

• 30

• 35