COULD ANYONE HELP ME DO THESE MATHS QUESTIONS?
3) sarah carries out A survey on two groups of people.
on the first group she calculate the mean age to be 10 and the range to be 3
with the second group she calculates the mean age to be 10 with a range of 7
explain the difference between the ages of the two groups of people
4) chris has to decide which type of battery his company is to use in their toys
hes has a choice between two differnet batteries
type a have a median life of 15 hours with range of 2 hours
type b have a median life of 15 hours but have a range of 6 hours
which type of battery does chris choose and why?