Answer:
mean= 1.3
mode= no mode
median= 4.5
range= 48
Explanation:
Mean= the average of the data
6+3+-2+11+-7+-9+18+-30+10+13 = 13
13/10= 1.3
Mode= most common number in data
there is no mode since no numbers are repeated
Median= the middle number of data
1- order data set
-30,-9,-7,-2,3,6,10,11,13,18
2- find the middle number
there are two middle numbers, 6 and 3
to find the middle of them add them and divide by two: 6+3/2 = 4.5
range= the greatest number - the smallest number of data
greatest numer=18
smallest number=-30
18--30 = 48