Answer:
10.94
Step-by-step explanation:
The standard deviation is calculated by using the following formula:

This means that N is the total number of cases you want to take into account, times the sum of x at the ith position - x squared.
In other words, the standard deviation in your example implies the following:
26 is the first value, so i = 1, 34 is the second value, so i = 2, 18 where i = 3, and so on and so forth, until you reach the end, which is 6 (so the initial value is 1 and the last one is 6).
You're doing a sum over an iteration of all the numbers in your sample.
So applying the sum of all of the numbers, it gives us the following:


The sum of all of the numbers in your sample is equal to 119.6.
Substitute into the equation once again:

Where the square root of 119.6 is 10.93617...
Rounded to two decimal places: 10.94
Answer:
The answer is A. If not then I'm sorry ☹
Answer is 12
K=y/x (rise over run)
The same rise over run happens to the next point, up 12 over 1
Answer:
T = 4.541
Step-by-step explanation:
We don't have the standard deviation for the population, so we use the t-distribution.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 4 - 1 = 3
98% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 3 degrees of freedom(y-axis) and a confidence level of
. So we have T = 4.541