Question

The data below shows the average number of text messages sent daily by a group of people: 7, 8, 4, 7, 5, 2, 6, 4, 5, 7, 4, 8, 2, 1, 8 What will be the effect of introducing an outlier in the data?

a)The mean number of text messages sent daily will increase.
b)The mean number of text messages sent daily will decrease.
c)The median number of text messages sent daily will increase.
d)The median number of text messages sent daily will decrease.

Answer 1

@math&ing001 like this?

Answer 2

first, what's the difference between "mean" and "median" Which one is influenced more by the presence of an outlier?

Answer 3

Yeah ! Well the median here is between 1 and 8, and the median doesn't change when introducing an outlier. So only the mean will be affected. Since the average number of calls is between 1 and 8, we cannot introduce a lower outlier, hence a higher outlier will increase the mean number of text messages sent daily.

Answer 4

so it's A?

Answer 5

Yes

Answer 6

thanks so much like two more if you can

Answer 7

i'll post them separate again