# Question

Room and board costs for selected schools are summarized in this distribution. Find the approximate cost of room and board corresponding to each of the following percentiles.

Costs (in dollars) Frequency

3000.5–4000.5 .....5

4000.5–5000.5 .....6

5000.5–6000.5 .....18

6000.5–7000.5 .....24

7000.5–8000.5 .....19

8000.5–9000.5 .......8

9000.5–10,000.5.....5

a. 30th percentile

b. 50th percentile

c. 75th percentile

d. 90th percentile

Costs (in dollars) Frequency

3000.5–4000.5 .....5

4000.5–5000.5 .....6

5000.5–6000.5 .....18

6000.5–7000.5 .....24

7000.5–8000.5 .....19

8000.5–9000.5 .......8

9000.5–10,000.5.....5

a. 30th percentile

b. 50th percentile

c. 75th percentile

d. 90th percentile

## Answer to relevant Questions

Using the data in Exercise 16, find the approximate percentile rank of each of the following costs. a. 5500 b. 7200 c. 6500 d. 8300 The average weekly earnings in dollars for various industries are listed below. Find the percentile rank of each value. 804 736 659 489 777 623 597 524 228 Using the procedure shown in Example 3–37, check each data set for outliers. a. 16, 18, 22, 19, 3, 21, 17, 20 b. 24, 32, 54, 31, 16, 18, 19, 14, 17, 20 c. 321, 343, 350, 327, 200 d. 88, 72, 97, 84, 86, 85, 100 e. 145, ...Construct a boxplot for the number (in millions) of visitors who traveled to a foreign country each year for a random selection of years. Comment on the skewness of the distribution. 4.3 0.5 0.6 0.8 0.5 0.4 3.8 1.3 ...9.7, 4.6, 2.2, 3.7, 6.2, 9.4, 3.8 Identify the five-number summary and find the interquartile range.Post your question

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