11.a
Range: 16
To find the range, you subtract the biggest number(52) from the smallest number(36)
52-36=16
11.b
Mean: 43.75
To find the mean, you have to add all the numbers, then divide by the total amount of numbers
(36+45+52+40+38+41+50+48)/2 = 43.75
Median: 43
To find the median, the numbers must be put in either ascending or descending order and the middle must be found. In this case, there were 2 numbers(41 and 45) so you add the two and divide by 2.
36,38,40,41,45,48,50,52 (41+45)/2=43
Mode: N/A
The mode is the number that occurs the most and in this case each number is only seen once , so there is no mode
I am going to put the answers for the rest since I've explained the process
12a.
Range: 3655
12b.
Mean: 1014.166667 = 1014.17
Median: 608.5
Mode: N/A
13a.
Mean: You: 4 Friend: 8
Median: You: 17 Friend: 17
Mode: You: N/A Friend: 20
13b.
Your Friend