Relative frequency and random variables
Answers are for parents and teachers.
1
18 of 45 shots hit the target. What is the relative frequency of hits?
2/5
2
The values 2, 3, 4 of X have frequencies 6, 9, 5. Find N.
20
3
Find the probability that the sum of points on two dice is 5.
1/9
4
Mark discrete or continuous: a) calls received in a day; b) air temperature; c) number of girls in a class.
a) discrete; b) continuous; c) discrete.
5
Why do relative frequencies add up to 1?
(M₁ + ... + M_k) : N = N : N = 1.