The variance of the sample data is?

12.4523 kg

Step-by-step explanation:

The variance is found by averaging the square of the deviance (how far a number is from the mean) of each number.

Since we found the average of the deviance, all we have to do now is square that, and divide by the number of subjects.

11.1590² = 124.5232 --> 124.5232/10 = 12.4523 kg

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.