Differences in Data

Which of the boxpots has the larger larger interquartile range?

• female

• male

• they're the same

• impossible to tell

Which of the following best describes the shape of the distribution?

• SKEWED LEFT

• SKEWED RIGHT

• UNIFORM

• SYMMETRICAL

What is the shape of the data for Lucy's Steakhouse?

• Symmetrical

• Skewed Left

• Skewed Right

After subtracting the mean from each value in the data set, the next step is to find the sum of those differences.

• True, then square that sum.

• False. Square the differences, then find the sum.

Calculate the sum of the square of the difference. (That is, steps 2, 3, and 4 ... Σ(x - μ)²

• 145.5

• 150

• 12

Last step... What is the variance?

• 24.25

• 29.1

• 2

• 4.9

Now, calculate the standard deviation.

• 12.1

• 21170.25

• 600.25

• 4.9

Order the dot plots from least to greatest standard deviation.

• A, D, C, B

• B, C, D, A

• A, D, B, C

• B, C, A, D

This kind of graph is used to compare differences between groups.

• bar graph

• line graph

• pie chart

• pareto chart

This kind of graph is better to use when smaller changes exist in the data.

• bar graph

• line graph

• pie graph

• pictograph