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Math·Problem-Solving and Data Analysis·One-variable data: Distributions and measures of center and spread

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The maximum temperature on April 1, in degrees Fahrenheit (${}^{\circ }\text{F}$) was recorded each year at a certain weather station for 11 years. The histogram summarizes the recorded data set. The temperature of $77.9^{\circ }\text{F}$ is removed from this data set to create a new data set of 10 temperatures. Which of the following statements must be true?

I. The mean of the new data set is less than the mean of the original data set.
II. The median of the new data set is less than the median of the original data set.

A

I and II

B

II only

C

Neither I nor II

D

I only