Adding and Subtracting Rational Expressions

Which measure of central tendency is defined as the average of a data set?

• Mean

• Median

• Mode

• Range

What is the median of the data set: 35, 46, 51, 51, 53, 58, 58, 59, 60?

• 59

• 58

• 53

• 51

In the data set: 35, 46, 51, 51, 53, 58, 58, 59, 60, which values are the modes?

• 35 and 46

• 58 and 60

• 53 and 59

• 51 and 58

What does the mean absolute deviation measure?

• The average of the data set

• The most frequent value in the data set

• The middle value of the data set

• The spread of the data set

How is the mean absolute deviation calculated?

• By finding the most frequent value in the data set

• By finding the average of the absolute differences from the mean

• By finding the middle value of the data set

• By finding the average of the squared differences from the mean

What is the mean absolute deviation of the data set: 85, 74, 88, 80, 92, 60?

• 12.34

• 8.56

• 19.83

• 5.17

What is the variance of a data set?

• The most frequent value in the data set

• The average of the squared differences from the mean

• The middle value of the data set

• The average of the data set

How is the standard deviation related to the variance?

• It is the sum of the variance

• It is the absolute value of the variance

• It is the square root of the variance

• It is the square of the variance

What does a lower standard deviation indicate about a data set?

• The values are closer together

• The data set has a higher mean

• The values are more spread out

• The data set has more modes

Using a calculator, what is the standard deviation of the data set: 127, 81, 135, 197, 115, 72, 152, 63, 164?

• 29.20

• 41.56

• 32.22

• 23.14