Stats Unit Review

The ____________ is the measure of central tendency that represents the middle number in a set of data.

• Mode

• Average

• Principal

• Median

In order to find the ____________, we add up all of the numbers in the data set and then divide the sum by the number of numbers.

• Average

• Mode

• Upper Quartile

• Median

The number that appears the most in a data set is commonly known as the ___________.

• Mean

• Range

• Mode

• Average

How do we find the median when there are exactly TWO numbers in the middle of the data set?

• We add up all of the numbers and divide by the number of numbers.

• Subtract the lower extreme from the upper extreme.

• Add the two numbers together and divide the sum by 2.

• Use the formula I = P x r x t

An OUTLIER in a set of data is a number that is far away from the rest of the numbers.

Identify the OUTLIER in this data set.

5, 8, 10, 11, 15, 53

• 5

• 53

• 0

• 15

What does this symbol represent?

• Standard Deviation
• Variance
• Mean Absolute Deviation
• Sigma

What does standard deviation represent?

• How many different variations are in the data set.

• How the population varies compared to the sample.

• How spread out each data value is from the mean.

• The range, but with a bunch of other stuff going on.

What is the median of the data?

• 200
• 100
• 90
• 140

Which restaurant has a higher median wait time?

• Lucy's Steakhouse
• Gary's Grill
• They are the same

What value is the lower quartile?

• 66
• 58
• 60
• 64