Which of the following numbers in the data set is an outlier? 21, 23, 19, 25, 83, 23, 21 pls it is for my friend

The outlier in this set of data is 83.

The outlier in a data set is any number that is much higher or lower than the average of the set.

83 is nowhere near the average of 23 in this set, and so it is the sole outlier.

Hope this helps!

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!

b

step-by-step explanation:

it have 5 sides and 5 identicle angle.the rest does not have the same property as b.

brainliest