106. Test your knowledge. Graphical Displays of Data

1. The section of statistics which involves the collection, organization, summarizing, and presentation of data relating to some population or sample is

(a) inferential statistics.

(b) descriptive statistics.

(c) an example of a frequency distribution.

(d) the study of statistics.

2. A subset of the population selected to help make inferences on a population is called

(a) a population.

(b) inferential statistics.

(c) a census.

(d) a sample.

3. A set of all possible data values for a subject under consideration is called

(a) descriptive statistics.

(b) a sample.

(c) a population.

(d) statistics.

4. The number of occurrences of a data value is called

(a) the class limits.

(b) the frequency.

(c) the cumulative frequency.

(d) the relative frequency.

5. A large collection of data may be condensed by constructing

(a) classes.

(b) a frequency polygon.

(c) class limits.

(d) a frequency distribution.

6. When constructing a frequency distribution for a small data set, it is wise to use

(a) 5 to 20 classes.

(b) 5 to 15 classes.

(c) 5 to 10 classes.

(d) less than 10 classes.

7. When constructing a frequency distribution for a large data set, it is wise to use

(a) 5 to 20 classes.

(b) 5 to 15 classes.

(c) 5 to 10 classes.

(d) less than 10 classes.

8. When straight-line segments are connected through the midpoints at the top of the rectangles of a histogram with the two ends tied down to the horizontal axis, the resulting graph is called

(a) a bar chart.

(b) a pie chart.

(c) a frequency polygon.

(d) a frequency distribution.

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