14. Whichof the following is correct for this class interval? 60–less than 65 A.

Question

14. Whichof the following is correct for this class interval?

60–less than 65

A. All values within the class are at least 60,but greater than 65.

B. The class interval is 5.

C. The class mark is 2.5.

D. The largest data value in the class is 65.

15. Whatis ½ 99 96½ equal to?

A. 2

B. 2

C. 3

D. 3

16. Aparticular sample contains 50 data values. According toChebyshev’s theorem, which of the following is the number ofvalues you would expect to fall within 3.0 standard deviations ofthe mean?

A. 5

B. 25

C. 35

D. 45

17. Twostatisticians are criticizing a survey question, which reads,“Would a new life-enhancing health spa make your neighborhoodbetter off?” Statistician A says the question containsleading words. Statistician B says the frame of reference isconfusing. Who is correct?

A. Only Statistician A is correct.

B. Only Statistician B is correct.

C. Both statisticians are correct.

Explanation / Answer

14. B. The class interval is 5. 15. C. 3 16. A. 5 17. B. Only Statistician B is correct.

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