Answer:
(a) The sample variance is 16.51
(a) The sample standard deviation is 4.06
Step-by-step explanation:
Given

Solving (a); The sample variance.
First, calculate the class midpoints.
This is the mean of the intervals.
i.e.





So, the table becomes:

Next, calculate the mean




Next, the sample variance is:

So, we have:



The sample standard deviation is:



Answer:
assuming only positive integers, the answer is 1
Step-by-step explanation:
the smallest number that you can get by adding is:
- start with 0
- then add 1 = 1
- add another 1 = 2
- add another 1 = 3
- add another 1 = 4
- add another 1 = 5
but you can also multiply, and anything multiplied by 0 is 0:
- start with 0
- multiply by 2 = 0
- multiply by 2 = 0
- multiply by 2 = 0
- multiply by 2 = 0
- multiply by 2 = 0
The question does not say that we need to do any specific calculation, it only gives us 2 options and we can choose them as many times as we want.
Answer:
B is the answer on edge
Step-by-step explanation:
Answer:
C. 9
Step-by-step explanation:
3n - 18 = 9
3n (- 18 + 18) = 9 + 18
3n = 27
3n/3 = 27/3
n = 9