Answer:
The median for plot A = 21
The median for plot B = 23
Explanation:
Note that:
The number of dots on each number represents the number of times the number appears in the distribution.
The median is the middle number of a distribution.
For plot A:
21 appears 4 times
22 appears 2 times
24 appears 1 time
The distribution represented by the dotplot A is:
21, 21, 21, 21, 22, 22, 24
Since there are 7 numbers in the distribution, the 4th number is the middle number
Therefore, the median = 21
For plot B:
21 appears 1 time
22 appears 2 times
23 appears 3 times
24 appears 3 times
The distribution represented by the dotplot B is:
21, 22, 22, 23, 23, 23, 24, 24, 24
Since there are 9 numbers in the distribution, the 5th number is the middle number
Therefore, the median = 23
