PTA PTA Data Interpretation and Analysis

Question 1

A bar chart shows sales of 40 in January, 60 in February, and 50 in March. What is the average monthly sales?

Accepted Answer

50

Answer

Average = (40 + 60 + 50) ÷ 3 = 150 ÷ 3 = 50.

Question 2

A pie chart shows that 25% of students prefer math. If there are 200 students total, how many prefer math?

Accepted Answer

50

Answer

25% of 200 = 0.25 × 200 = 50 students prefer math.

Question 3

A line graph shows a company's profits rising steadily from $10,000 in 2020 to $50,000 in 2024. What is the trend?

Accepted Answer

Increasing

Answer

When values rise steadily over time on a line graph, this represents an increasing or upward trend.

Question 4

In a table showing test scores, the values are 72, 85, 90, 68, and 75. What is the median score?

Accepted Answer

75

Answer

Arranged in order: 68, 72, 75, 85, 90 — the middle value (median) is 75.

Question 5

A table shows 5 students scored: 80, 90, 70, 100, 60. What is the range of scores?

Accepted Answer

40

Answer

Range = highest score − lowest score = 100 − 60 = 40.

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