Intro to Stats Chapter 2 Test

The number of miles that Jenna cycled each week for a 7-week period is shown: 
36, 42, 28, 52, 48, 36, 31 
What is the median number of miles Jenna cycled?

• 24

• 36

• 39

• 52

The number of pages that Carolyn wrote in her journal each day from Monday to Friday is shown below: 
9, 8, 12, 6, 10
What is the mean number of pages she wrote per day?

• 5

• 6

• 9

• 11

The normal curve is symmetrical about the mean.

• True

• False

Women’s heights have a mean of 63.6 in. and a standard deviation of 2.5 inches.  The z score corresponding to a woman with a height is 2.56. How tall is the woman?

• 24.42 in

• 70 in

• 28in

• 68.6in

• the shape is skewed to the right
• the shape is symmetric
• the shape is skewed to the left
• 75% of the data is between 1-8

IQR = Q3 - Q1

• True

• False

How would you describe the shape of this distribution?

• Left Skewed

• Right Skewed

• Approximately Symmetrical

• no distribution

A pie chart allows you to easily see

• information about the proportion of parts relative to the whole.

• the total number of each category.

• how much data occurs within a range of numbers.

• the spread of the data.

Which type of graph is this?

• Box Plot

• Bar Graph

• Dot Plot

• Stem Plot

1. define the problem
2. gather data
3. summarize data
4. communicate conclusions

• scientific method

• statistical method

• rhoades method

• euler method