Question : 9.2   Multiple-Choice Questions 1) Which of the following describes the descriptive : 1222608

9.2   Multiple-Choice Questions

1) Which of the following describes the descriptive measure “median”?

A) It is the center point of the data set, when the observations are ordered by magnitude.

B) It is the average value calculated by adding all the observations and dividing by the number of observations.

C) It is the average of the squared deviations of the observations from the mean.

D) It is the most frequently occurring value.

2) Which of the following statements is true of the measures of variability?

A) Low variability indicates that the observations are located farther from the mean.

B) Two data sets can have the same number of observations and the same mean, median, and mode but have different variability.

C) Like the mean, the variance and standard deviation have the advantage of considering select observations in the data set.

D) Compared to the standard deviation, the variance is more easily interpreted because it is stated in terms of basic units.

3) Which of the following is the first step in creating a histogram?

A) plotting the data

B) determining frequency of observations

C) defining the intervals

D) analyzing the data

4) What does a positively skewed distribution mean?

A) The distribution is more heavily weighted toward larger numbers.

B) The median is lower than the mean, which is lower than the mode.

C) The distribution extends farther to the left than to the right.

D) The mean is greater than the median, which is greater than the mode.

5) Which of the following terms describes a distribution that is more heavily weighted toward larger numbers?

A) negatively skewed

B) positively skewed

C) right-skewed

D) symmetrically skewed

6) Which of the following is a feature of a normal distribution?

A) It is positively skewed.

B) Its mean, median, and mode are all equal.

C) It is completely described by its median and variance.

D) The normal distribution curve is s-shaped.

7) Which of the following is an important dimension to be considered while evaluating the distribution of a data set?

A) accuracy of the data

B) changes in internal variables

C) timing of the distribution

D) skewness of the distribution

8) Which of the following is a reason why dynamic visual exhibits are utilized in a courtroom?

A) A long presentation is less likely to produce memorable highlights.

B) Visual tools bring a change in the pace of the presentation and prevent monotony.

C) It is easier to present data in a visual form than in words.

D) Information can be communicated more efficiently in visual form.

9) Which of the following categories of data can be displayed by a pie chart?

A) data that sum to a total

B) forensic data collected as evidence

C) qualitative data

D) time series data

10) Which of the following statements is true of a bar graph display?

A) It is the same as a line graph.

B) It allows for more than one category of data to be presented on the same graph.

C) It is used to display qualitative data.

D) It cannot be used to chart multiple time series.