At the end of the trip, the Brackman family had driven 902 miles and used 32.8 gallons of gas. On average, how many miles did the Brackmans drive per gallon of gas? How many gallons of gas did they use for each mile they drove?

just becuse dhetg

Step-by-step explanation:

The standard deviation of the data set will be found as follows:
10, 10, 15, 20, 25
mean=(10+10+15+20+25)/5=80/5=16
next we find the:
∑(x-μ)²
where:
μ- mean
thus
∑(x-μ)²=[(10-16)²+(10-16)²+(15-16)²+(20-16)²+(25-16)²]=206
hence the variance will be:
Var(x)=∑(x-μ)²/(n-1)
=206/(4-1)
=51.6
thus the standard deviation will be:
σ=√51.6
σ=7.176