Algebra 1 | Unit 1 | Lesson 12: Standard Deviation | Practice Problems

The shoe size for all the pairs of shoes in a person's closet are recorded. 7 7 7 7 7 7 7 7 7 7 What is the mean?

Tags

CCSS.6.SP.B.5C

The shoe size for all the pairs of shoes in a person's closet are recorded. 7 7 7 7 7 7 7 7 7 7 What is the standard deviation?

Tags

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.4

Here is a data set: 1 2 3 3 4 4 4 4 5 5 6 7 What happens to the mean and standard deviation of the data set when the 7 is changed to a 70?

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

For the data set with the value of 70, why would the median be a better choice for the measure of center than the mean?

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

Which of these best estimates the standard deviation of points in a card game?

• 5 points

• 20 points

• 50 points

• 500 points

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

The mean of data set A is 43.5 and the MAD is 3.7. The mean of data set B is 12.8 and the MAD is 4.1. Which data set shows greater variability? Explain your reasoning.

Tags

CCSS.6.SP.B.5C

What differences would you expect to see when comparing the dot plots of the two data sets?

Tags

CCSS.HSS.ID.A.3

Select all the distribution shapes for which the mean and median must be about the same.

• bell-shaped

• bimodal

• skewed

• symmetric

• uniform

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

What is the IQR?

• 5 branches

• 7 branches

• 10 branches

• 12 branches

Tags

CCSS.6.SP.B.5C

The data represent the number of cans collected by different classes for a service project. 12 14 22 14 18 23 42 13 9 19 22 14 Find the mean.

Tags

CCSS.6.SP.B.5C