http://www.ck12.org Chapter 7. Organizing and Displaying Data - Basic
a. How much money did the middle 50% of each sex spend on school lunches each month?
b. What is the significance of the value $42 for males and $46 for females?
c. What conclusions can be drawn from the above plots? Explain.- The following box-and-whisker plot shows final grades last semester. How would you best describe a typical
grade in that course?
a. Students typically made between 82 and 88.
b. Students typically made between 41 and 82.
c. Students typically made around 62.
d. Students typically made between 58 and 82.Review Answers
1.
- Three things we can say from the graph are:
- The smallest number is 100
- The largest number is 195
- 50% of the data is between 120 and 155
- (Males $22 - $58) (Females $28 - $68)
- Median values.
- Females spend more money on lunches than males spend.
- Students typically made between 41 and 82.
Answer Key for Review Questions (even numbers)
- Three things we can say from the graph are:
- The smallest number is 100
- The largest number is 195
- 50% of the data is between 120 and 155
- Students typically made between 41 and 82.
Vocabulary
Broken-Line Graph
A graph with line segments joining points that represent data.Continuous Data
Data which has all meaningful values for the problem.Correlation
A linear relationship between two variables.