1. Which of the following summary measures cannot be easily approximated from a

Question

1. Which of the following summary measures cannot be easily approximated from a box-and-whisker plot? (a) the range (b) the interquartile range (c) the second quartile (d) the standard deviation

2. Determine whether the following type of data is nominal level, ordinal level, interval level or ratio level: Temperatures (in degrees Fahrenheit) of a sample of dairy coolers at local supermarkets. (a) nominal (b) interval (c) ratio (d) ordinal

3. Probability theory is most likely to be an important tool in which of the following? (a) presenting data (b) summarizing data (c) generalizing from data (d) descriptive statistics

4. In order to present numerical categories of a variable with their corresponding frequencies, we use a _________________ distribution. (a) cumulative (b) qualitative (c) percentage (d) quantitative

5. In a histogram, the widths of the rectangles (bars) represent the: (a) class marks (b) class intervals (c) class frequencies (d) class boundaries

6. Descriptive statistics does not involve ______________ data. (a) summarizing (b) presenting (c) generalizing from (d) analyzing

7. Which of the following could be used to display a categorical distribution graphically? (a) histogram (b) pie chart (c) frequency polygon (d) stem and leaf display

8. In order to compare the values of two numbers which belong to different sets of data, we use: (a) z-scores (b) Chebyshev’s theorem (c) the coefficient of variation (d) the midrange

9. For a set of data which contains extreme values, the best measure of location among the following is the: (a) median (b) mean (c) mode (d) midrange

10. Which of the following is not a measure of location? (a) mean (b) median (c) midrange (d) range

Explanation / Answer

Ans-1. (d) Standard Deviation

Ans-2. (b) Interval

Ans-3. (d) descriptive statistics

Ans-4. (d) quantitative

Ans-5. (b) class intervals

Ans-6. (c) generalizing from

Ans-7. (b) Bar or pie chart

Ans-8. (a) z-scores

Ans-9. (b) mean

Ans-10. (d) Range

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