Answer:
The median is 56
Step-by-step explanation:
50, 52, 52, 55, 56, 56, 56, 58, 58, 59, 60
Then you start eliminating
1. 52, 52, 55, 56, 56, 56, 58, 58, 59
2.52, 55, 56, 56, 56, 58, 58
3. 55, 56, 56, 56, 58
4. 56, 56, 56
5. 56
6. So, the median is 56.
Hope this helped!
Answer:
d.revenies increased by 500
Answer:
3.6661
3.6661
A, Adding a constant does nothing to the standard deviation
Step-by-step explanation:
I'm gonna assume s=standard deviation
The standard deviation is just the square root of the second moment minus the first moment squared
Because we were not told otherwise I think it's pretty safe to assume that all events are equally likely
Let's start by calculating the first moment (AKA The mean)
1/5(8+16+14+8+16)= 12.4
Let's then find the second moment
1/5(8²+16²+14²+8²+16²)= 167.2
√(167.2-12.4²)=3.6661
b.
While I could just tell you that adding something to the standard deviation (and the variane as well) doesn't do anything let's calculate it for fun
same process
.2(16+24+22+16+24)= 20.4
.2(16²+24²+22²+16²+24²)=429.6
√(429.6-20.4²)= 3.6661
This one is easy all you have to do is subtract the 2.25 by the 15 to get 12.75.
