Question

question 1 1 pts which one of the following statements about graphical displays is correct? a pie chart is most effective when the goal is to display how a quantitative variable changes over time. in a bar graph, all bars should have the same width in order to ensure a fair visual comparison across categories. a histogram is appropriate for categorical data because the categories can be arranged side - by - side, with no gaps. in a bar graph, the height of the bars should reflect percentages, but the width of the bars can vary depending on the size of the sample. a line graph should be used if the goal is to determine whether a variable is skewed to the left or skewed to the right. no answer text provided.

Explanation:

1. A pie - chart is used to show proportions of a whole, not changes over time.
2. In a bar graph, equal - width bars ensure a fair visual comparison among categories.
3. A histogram is for numerical data grouped into intervals, not categorical data.
4. In a bar graph, bar widths should be equal, and heights can represent counts, percentages etc.
5. A box - and - whisker plot is used to check skewness, not a line graph.

Answer:

In a bar graph, all bars should have the same width in order to ensure a fair visual comparison across categories.