Using a calculator, you should get a sample standard deviation of approximately 2.5 hours
If you want to find the standard deviation by hand, you need to do the following steps
- Find the mean mu
- Subtract each data value from the mean to get (x-mu)
- Square each result from step 2, so we now have (x-mu)^2
- Add up each square from the previous step
- Divide that result over n-1. In this case n = 14 is the sample size. This computes the sample variance.
- Finally, apply the square root to get the sample standard deviation.
The teacher data set has a sample standard deviation of roughly 2.5 hours; compare this with the sample standard deviation of the students 1.9 hours, and we see that the teacher data set is more spread out. The larger the standard deviation is, the more spread out the data set will be.
Answer:
Step-by-step explanation:
i dont think thats possible without the y value
Answer:
1, because you can subtract both equations to eliminate y , and you will be left with only x.
Step-by-step explanation:
Answer:
There is sevral answers for one answer is David is blind another is far sighted
but the answer your looking for is C
Step-by-step explanation:
Answer:
m∠C = 28.1°
Explanation:
angle m∠C has opposite angle of 16 and hypotenuse of 34
using sine rule:
C = 28.07248°
C = 28.1°