Ten randomly selected people were asked to join a fitness group. Over the next two weeks, they were tested on how many push-ups they could do. The data shows the number of push-ups they did over the two weeks. From the first to the second week, what was the increase in the median number of push-ups?
Week 1: 5, 8, 10, 11, 6, 8, 9, 15, 5, 8
Week 2: 7, 9, 11, 12, 8, 10, 11, 18, 9, 10
(1 point)
push-ups
To find the increase in the median number of push-ups, we need to find the median for each week and then calculate the difference.
First, let's organize the data in ascending order:
Week 1: 5, 5, 6, 8, 8, 8, 9, 10, 11, 15
Week 2: 7, 8, 9, 10, 10, 11, 11, 12, 18
In Week 1, the median is the middle value, which is 8.
In Week 2, the median is also the middle value, which is 10.
The increase in the median number of push-ups is 10 - 8 = 2.