BMST Data Interpretation and Probability 2

Question 1

A bar chart shows monthly sales: Jan=120, Feb=95, Mar=150, Apr=110. What is the mean monthly sales?

Accepted Answer

118.75

Answer

Mean = (120+95+150+110)/4 = 475/4 = 118.75.

Question 2

A bag contains 4 red, 6 blue, and 2 green marbles. What is the probability of drawing a blue marble?

Accepted Answer

1/2

Answer

P(blue) = 6/12 = 1/2.

Question 3

A pie chart shows 40% of students prefer math, 35% prefer science, and 25% prefer English. If there are 200 students, how many prefer science?

Accepted Answer

70

Answer

35% of 200 = 0.35 × 200 = 70 students.

Question 4

A line graph shows temperatures (°F): Mon=72, Tue=68, Wed=75, Thu=70, Fri=73. What is the median temperature?

Accepted Answer

72

Answer

Ordered values: 68, 70, 72, 73, 75 — the middle value is 72.

Question 5

Two dice are rolled. What is the probability that the sum equals 7?

Accepted Answer

1/6

Answer

There are 6 ways to get a sum of 7 out of 36 total outcomes: 6/36 = 1/6.

BMST - Basic Math and Science Test Practice Test