SAT Mc Graw Hill 2011

CHAPTER 11 / ESSENTIAL ALGEBRA 2 SKILLS 429

Concept Review 5: Data Analysis

1. What is a line of best fit?


2. How is a line of best fit created?


3. How do you estimate the slope of a best fit line?


4. When given percentages in a pie chart, how do you determine how many degrees each sector represents?

Questions 5 and 6 refer to the bar graph at right:

5. The largest percent increase in number of accidents occurred between
   which two days of the week?


6. Approximately what percentage of the accidents occurred on Friday,
   Saturday, or Sunday?

Questions 7–9 refer to the pie chart at right:

7. The pie chart shows the results of a survey that asked 4,000 kindergarten
   students their favorite color. How many more students said yellow was
   their favorite color than said blue was their favorite color?


8. What is the degree measure of the sector of the circle that represents red?


9. Using the data in the pie chart, how many students would have to change
   their answer to blue in order for blue to account for 50% of the data?

Questions 10 and 11 refer to the tables at right:

10. According to the tables, which school ordered the most
    amusement park tickets?


11. If all the students who went to Coaster Heaven from New
    Haven Public and Hamden High bought 5-day passes, how
    much more money did Hamden High spend than New
    Haven Public did at Coaster Heaven?

5

10

15

Car Accidents(in thousands)

SundaysMondaysTuesdays

Wednesdays

Thursdays

Fridays

Saturdays

HIGHWAY ACCIDENT

FREQUENCY 2003