the answer is a on edgenunity
Square root of 12.5
How exactly is the square root written?
First of all, negative numbers will surely come before positive ones. So, let's compare -2.3 and -1/3.
One is a number, one is a fraction. You can either turn the fraction to number, or the number to fraction. The first option is surely easier: we have -1/3 = -0.333...
So, -1/3 is closer to 0 than -2.3, so we have
As for the positive numbers, we have to order . When dealing with positive numbers, it is true that . So, we can square the numbers to get rid of the roots: we have
So, the ordered list is the following:
E. none of the above
The given data values that represents the population:
2, 6, 3, and 1.
Number of values : n=4
Mean of the data values =
Sum of the squares of the difference between each values and the mean =
Now , Variance = (Sum of the squares of the difference between each values and the mean ) ÷ (n)
= (14) ÷ (4)= 3.5
Hence, the variance is 3.5.
Therefore , the correct answer is "E. none of the above".