21.5 means 21 and 5 tenths and is read that way.
21.5 = 21 5/10 =(21*10 + 5) /10 = 215/10 = 43/2 in simplest terms
Answer:
I think you should just follow what that person said
4 with a remainder of 11
Ok ok
Adding an outlier would increase n (the number of data points) by 1.
Before that were to happen, the median would be the mean of 61 and 65, or 63.
After that were to happen, the median of the revised data set would be the middle, or 7th, point: 65. So: The IQR would increase.