Best Measure of Center Mean or Median

Data Set: 44, 43, 42, 40, 42, 45, 39, 38, 18.

Is the median or mean the best measure of center? Explain.

Choose the correct measure of center AND explanation.

• Median, because there is an outlier

• Median, because the data is clustered together

• Mean, because there is an outlier

• Mean, because the data is clustered together

Which is a good measure of center when the data contains an outlier?

• mean

• median

• mode

What is the mean of the data set: 44, 43, 42, 40, 42, 45, 39, 38, 18. ONLY TYPE IN A NUMBER

(a)  

Each of five different stores sell a quart of milk for the following prices:

$1.50, $1.55, $1.80, $1.70, $1.50

What is the mean?

• 1.55

• 1.7

• 1.61

• 2

Over the last five days, Jen ran 5, 4, 6, 4.5, and 5.5 miles. The most appropriate measure of center for this data is:

• Mean because all the numbers are close together.

• Median because all the numbers are close together.

• Mean because 2 is much lower than the other numbers.

• Median because 2 is much lower than the other numbers.

This list shows the number of text messages 5 friends sent last week: 15, 17, 19, 20, 24

The most appropriate measure of center for this data is the

• mean because all the numbers are close to

  one another in value.

• median because all the numbers are close to

  one another in value.

• mean because 15 text messages is much

  lower than the other numbers.

• median because 15 text messages is much

  lower than the other numbers.

Bryan recorded the number of hours he slept last week. The data is shown below.
6.5, 7, 7.5, 6.5, 12, 7, 7.5
Which is a true comparison of the measures of center for Bryan's sleep data?

• Median = Mean

• Mean < Median

• Mean > Median

• Range = Mean

What is the median of the data set below?

• 41

• 44

• 54

• 67

Darius and Barb are playing a video game in which the higher score wins the game. Their scores are shown below.Darius’s scores: 96, 54, 120, 87, 123Barb’s scores: 92, 98, 96, 94, 110Barb says that she is the winner. Darius says that it is a tie. Who is correct?

• Barb is correct if both the mean and median scores are considered.

• Barb is correct if only the median score is considered.

• Darius is correct if both the mean and median scores are considered.

• Darius is correct if only the median score is considered.

What is the relationship of the mean and the median?

• The mean is greater than the median.

• The mean is less than the median.

• The mean and median are about equal.

• There is not enough information to know.