How do you find the range of 4, 6, 3,

Find the proportion of professional male golfers-drive on an average of 280 yards or less.
Approximately 5 percent of professional male golfers are found to be less than an average of 280 yards.

How do you find the mean of 26, 25, 24, 28?

Let ${\displaystyle P_i}$ denote the i-th prime number. Is there any formula for expressing
${\displaystyle S=\sum _{i=1}^m{P}_i}$.
We know that there are around ${\displaystyle \frac{P_m}{\ln \left(P_m\right)}}$ prime numbers less than or equal to ${\displaystyle P_m}$. So, we have:
${\displaystyle S\le m\times P_m\le \frac{P_m^2}{\ln \left(P_m\right)}}$
I want to know, if there is a better bound for S, in the litrature.

What is the standard deviation of {1, 2, 3, 4, 5}?

Given the set: ${\displaystyle \{2,-\frac{1}{2},-\frac{3}{4},x,\frac{7}{2}\}}$, for what x would the mean of the set be 1/2?

Find the median and quartiles for the data.

You deposit money into a saving account that earns interest. The balance Bo f the account after t years is given by ${\displaystyle B=1200\cdot {1.05}^{t}dollars.}$
a. Make a table that shows the account balance for years 0 through 10.
b. You want to buy a home entertainment center that costs $1500. How long will you need to wait to have enough money in your savings account? Report your answer to the nearest whole year.