Bluebook SAT Test Problem Solving and Data Analysis

Question 1

A scatter plot shows hours studied (x) vs. test score (y). The line of best fit is y = 8x + 42. What score does the model predict for 5 hours of study?

Accepted Answer

82

Answer

y = 8(5) + 42 = 40 + 42 = 82.

Question 2

In a class of 30 students, 18 passed math, 20 passed English, and 12 passed both. How many students passed neither subject?

Accepted Answer

4

Answer

By inclusion-exclusion: passed at least one = 18+20-12 = 26. Passed neither = 30-26 = 4.

Question 3

The table below shows monthly sales data. What is the mean monthly sales?
Month: Jan, Feb, Mar, Apr, May
Sales: $3,200, $4,800, $2,600, $5,400, $4,000

Accepted Answer

$4,000

Answer

Mean = (3200+4800+2600+5400+4000)/5 = 20000/5 = $4,000.

Question 4

A survey of 200 people found that 35% prefer coffee and 45% prefer tea. The rest prefer neither. How many people prefer neither?

Accepted Answer

40

Answer

35% + 45% = 80% prefer coffee or tea. 20% prefer neither. 0.20 × 200 = 40.

Question 5

A data set has values: 12, 15, 11, 18, 14, 13, 20, 9, 16, 12. What is the median?

Accepted Answer

13.5

Answer

Sorted: 9,11,12,12,13,14,15,16,18,20. Median = average of 5th and 6th: (13+14)/2 = 13.5.

Bluebook SAT Practice Test Practice Test

Bluebook SAT Practice Test Practice Test

Bluebook SAT Test Problem Solving and Data Analysis