Practice+Problems+with+Histograms

Practice Problems with Histograms 1. The above histogram represents the salaries (in thousands of dollars) of employees at a certain company. What salary range did the highest number of employees fall into? A. 33-43 B. 44-54 C. 0-10 D. 88+

Answer-B. Roughly 550 employees earn between $44,000 and $54,000 annually, whereas only 400 employees earn $33-43,000, 50 earn $0-10,000, and 100 earn over $88,000.

2. The above histogram represents the heights of Black Cherry Trees. How many Black Cherry Trees are under 75 feet tall (inclusive)? A. 8 B. 6 C. 10 D. 14

Answer-D. There are 3 trees between 60-65 feet tall, 3 between 65-70 feet tall, and 8 between 70-75 feet tall, therefore 14 trees are under 75 feet tall.

3. The above histogram represents the number of students who got certain score ranges on their final exam. How many students passed? (Assume that a 60 is the lowest passing grade) A. 20 B. 40 C. 60 D. 80

Answer-C. The histogram shows that 40 students scored between a 60 and an 80, and 20 students scored between an 80 and a 100, therefore, 60 students scored higher than a 60 and passed the final exam.

What is the best description of the shape of the distribution of this histogram? A. Symmetrical B. Right (Positively) Skewed C. Left (Negatively) Skewed D. None of the Above

Answer-B. The shape of the histogram is clearly Right (Positively) Skewed as the highest frequencies occur to the left side of the histogram and taper off to the right.

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