12a I can describe standard deviation.

The shoe size for all the pairs of shoes in a person's closet is recorded.

7, 7, 7, 7, 7, 7, 7, 7, 7, 7

What is the mean?

What is the standard deviation?

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

• 5 points

• 20 points

• 50 points

• 500 points

Standard Deviation is a measure of

• Center

• Variability

The low temperature in degrees Celsius for some cities on the same days in March is recorded in the dot plots.

Decide if the statement is true or false.

The standard deviation of Christchurch’s temperatures is zero because the data is symmetric.

• True

• False

The low temperature in degrees Celsius for some cities on the same days in March is recorded in the dot plots.

Decide if the statement is true or false.

The standard deviation of St. Louis’s temperatures is equal to the standard deviation of Chicago’s temperatures.

• True

• False

The low temperature in degrees Celsius for some cities on the same days in March is recorded in the dot plots.

Decide if the statement is true or false.

The standard deviation of Chicago’s temperatures is less than the standard deviation of London’s temperatures.

• True

• False