Week One Statistics Review Adv Alg

What does this symbol represent?

• Standard Deviation
• Variance
• Mean Absolute Deviation
• Sigma

Which of the following is a measure of spread, or variability?

(select all that apply)

• Interquartile Range

• Standard Deviation

• Mean

• Median

• Range

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.

All of the below sets have the same mean.
Set 1-Standard Deviation=3.1
Set 2-Standard Deviation=4.9
Set 3-Standard Deviation=1.7
Set 4-Standard Deviation=3.2
Which set of data probably has the points closest to the mean?

• 1
• 2
• 3
• 4

Both batters have the same average distance. Which one has a greater standard deviation?

• Batter A

• Batter B

• They have about the same standard deviation

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

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?

• 193
• 127
• 60
• 66

At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the mode.
12, 10, 10, 10, 13, 12, 11, 13, 10

• 13
• 12
• 11
• 10

Find the median of these numbers:
4, 2, 7, 4, 3

• 2
• 5
• 7
• 4

In the context of surveying, how would you differentiate between a sample and a population?

• A sample refers to a specific demographic, while a population refers to a general demographic.

• A sample refers to the entire group being surveyed, while a population is a smaller group within it.

• A sample is a subset of the population being surveyed, while a population refers to the entire group.

• In surveying, a sample and a population are essentially the same thing.