2-7 DOL (Standard Deviation)

To find the _________ you add up all the numbers and then divide by how many numbers you have.

• Mean
• Median
• Mode
• Range

Tags

CCSS.6.SP.B.5C

The masses of six children are 34.5 kilograms, 42.6 kilograms, 39.8 kilograms, 40.1 kilograms, 53.4 kilograms, and 33.8 kilograms. Find the mean mass.

• 40.7 kg
• 40
• 41
• 50

Tags

CCSS.6.SP.B.5C

What does this symbol represent?

• Standard Deviation

• Variance

• Mean Absolute Deviation

• Delta

• There is no equation for standard deviation

Before you can begin calculating the variance, you must first: #26

• find the mean

• find the median

• find the mode

• find the range

Once you've calculated the mean, and listed the values in a table, what is the next step to calculating the variance? #27

• Square each value in the data set

• Subtract each value in the data set from the mean

• Subtract the mean from each value in the data set

• Add the mean to each value in the data set

How do you calculate the standard deviation? #29

• Divide the variance by 2.

• Its a long process and I can't explain it right now.

• Find the mean and multiply it by the variance.

• Take the square root of the variance.

Ervin bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the sample standard deviation of Ervin's scores?

• 511.33

• 22.61

• 438.48

• 20.94