Standard Deviation Mean Absolute Deviation

What is the standard deviation of the data?

• 0.88 cm

• 0.90 cm

• 0.94 cm

• 1.02 cm

The data sets show the test scores of a group for the last two tests.

Test 1: {75, 75, 85, 80, 65, 70, 65} Test 2: {95, 85, 85, 90, 90, 95, 100}

Which data set had the SMALLER standard deviation?

• Test 1 with a standard deviation of 6.9

• Test 2 with a standard deviation of 6.9

• Test 1 with a standard deviation of 5.2

• Test 2 with a standard deviation of 5.2

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

• 2

• 16

• 4

What is the standard deviation of the data?

• 0.01 g

• 1.00 g

• 1.03 g

• 10.5 g

The mass in kg of a sample of beams was taken and the results were 5.2, 5.2, 5.3, 5.6, 5.7. What is the standard error of the mean?

• 0.01 kg

• 0.09 kg

• -0.01 kg

• -0.09 kg

What is the standard deviation for the data given:
5, 10, 7, 12, 0, 20, 15, 22, 8, 2

• 6.89

• 10.1

• 7.26

• 9

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

• find the mean

• find the median

• find the mode

• find the range

How do you calculate the standard deviation?

• 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.

What is the variance for the data given:
5, 10, 7, 12, 0, 20, 15, 22, 8, 2

• 47.47

• 102.01

• 52.77

• 81