Answer:
The correct option is b.
Step-by-step explanation:
The formula for standard deviation is
where, 
is mean of the data and n is number of observation.
The variance of a stock's returns can be calculated by the above formula.
Variance of stock's returns is the average value of squared deviations from the mean.
Therefore the correct option is b.
For the first triangle add 45 and 95 and subtract it from 180
Answer:
7.5 kilograms of apples
Step-by-step explanation:
Take the total amount and subtract the amount of pears.
8.9-1.4=7.5
Answer:
1.Radius if half of diameter
2.If you want to get to circumference it diameter x 3.14
3.To find area of circle r x r x 3.14
4.From circumferenc to diameter it is circumfrence
divided by 3.14
