The following boxplot illustrates the distribution of cholesterol levels in 40 r

Question

The following boxplot illustrates the distribution of cholesterol levels in 40 randomly selected US adults. Select the correct statements from the choices below. There is more than one correct answer, and credit is only given for choosing all correct answers and no incorrect answers. You have three tries for this question. About 25 people in this sample have cholesterol levels between 100 and 300 The maximum cholesterol level is a little over 900 The maximum cholesterol level is about 600 30 people have cholesterol levels at or below approximately 100 The upper quartile for cholesterol levels is 200 30 people have cholesterol levels at or below approximately 300 The 50^th percentile for the cholesterol levels in this sample is about 200

Explanation / Answer

Total number in the sample = 40

Q1 = 25% = 10

Q3 = 75% = 30

1st statement= wrong

Q3-Q1 = 20 people in the sample have cholestrol level between 100 and 300

2nd statement = right

Maximum cholestrol level is over 900

3rd statement = wrong

Maximum cholestrol level is over 900

4th statement = wrong

10 people have cholestrol level at or below 100

5th statement = wrong

Upper quartile for cholestrol level is 300

6th statement = right

Q3 or 30 people have cholestrol level at or below 300

7th statement = right

The median = Q2 = 50th percentile have cholestrol level around 200

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