MULTIPLE CHOICE. Choose the one alternative that best completes the statement or

Question

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Identify whether the statement describes inferential statistics or descriptive statistics 1) The average age of the students in a statistics class is 19 years A) inferential statistics B) descriptive statistics Determine whether the data are qualitative or quantitative. 2) the colors of automobiles on a used car lot 2) A) qualitative B) quantitative 3) the numbers on the shirts of a girl's soccer team 3) A) quantitative B) qualitative Identify the data set's level of measurement 4) numbers on the shirts of a girl's soccer team A) ratio B) ordinal C) nominal D) interval Use the given frequency distribution to find the (a) class width. (b) class midpoints of the first class. (c) class boundaries of the first class. 5) Height (in inches) Class 50 - 53 55 56 -58 59- 61 62-64 A) (a) 2 5) 12 13 B) (a) 3 C) (a)2 D) (a) 3 (b) 51.5 (c) 49.5-52.5 (b) 51 (c) 50-52 (b) 51.5 (c) 50-52 (b) 51 (c) 49.5-523 Provide an appropriate response. 6) For the dot plot below, what is the maximum and what is the minimum entry? 12 13 14 15 16 17 A) max: 14; min: 12 C) max: 54; min: 12 B) max: 17; min: 12 D) max: 54; min: 15

Explanation / Answer

(1)

This is descriptive statistics, because it describes the parameters of the population, which in this case is the whole class.

(2)

This is qualitative, because color cannot be counted but rather classified as being red, green, blue, etc.

(3)

This is also qualitative, because the numbers are just for classification/recognition and serve no other mathematical purpose.

(4)

This is a nominal level of measurement, because here the numbers can not be arranged, and have no absolute zero.

(5)

The class width is 3, and not 2 because the boundaries are inclusive in this case.

Midpoint of first class is 51, and its class boundaries are 50-52

(6)

Maximum is 17 and minimum is 12

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