Question

observe the box - and - whisker plot below. which of the following is true? the lower quartile is 30. the median is 21. the maximum value is 42. the upper quartile is 31. question 10 what is the main difference between a bar graph and a histogram? bar graphs have spacing between the bars, histograms do not. histograms are just a special type of bar graph. there are no differences between the two. bar graphs have a qualitative x - axis, histograms have a quantitative x - axis.

Explanation:

Question 1

In a box - and - whisker plot, the left - hand side of the box represents the lower quartile. Here, the lower quartile is clearly less than 30. The line inside the box is the median which appears to be around 21. The end of the right - hand whisker represents the maximum value which is less than 40. The right - hand side of the box represents the upper quartile which is around 31.

A bar graph is used for categorical data and has spaces between the bars. A histogram is used for continuous data and the bars are adjacent (no spaces between them).

Answer:

The median is 21

Question 2