Answer:
Step-by-step explanation:
Hello!
The mean is a measurement of central tendency that shows what is the most expected value of the variable. The standard deviation is a measurement of variability, it shows you how distant or dispersed are the values of a certain population or sample in regards to the value of the mean.
In this example the variable is X: score obtained on a math test.
It's mean is μ= 52 and its standard deviation is σ= 10
To know how many standard deviations away is a value of X concerning the mean you have to first subtract the mean to the value of X, X - μ, and then you have to divide it by σ:
(X - μ)/ σ
If X=76
(76 - 52)/ 10= 2.4
The score obtained by Andrea is 2.4σ away from the mean.
I hope it helps!
Answer: The answer is C. Hope this helps :)
Step-by-step explanation:
Well the line is straight so it will always have the same slope no matter what points you use but to solve it mathematically you do change in y/change in x
(3.5-(-1))/(4-(-5))
4.5/9 = 0.5
So the slope is 0.5
Now pick 2 random points on the line
(-3,0) and (5,4)
Now do the same thing for these 2 points
(4-0)/5-(-3)
4/8 = 0.5
So no matter what points the slope is always 0.5
Can u send a close up picture I can’t see it
Answer:
Do you know Mathwa y it’s a site of math that does all the work for u it even can put words in the problem. I had the same work as u and I did it all there
Step-by-step explanation:
