by simple observation,
the x's increase by 2 , so 20+p = 21
thus p=1
which lets the y's increase nicely by 1
Find the value of p,if mean of following distribution is 20.
X 15 17 19 20+p 23
Y 2 3 4 5p 6
3 answers
Cal the xi fi and fixi then the total.
Put the values in the formula of mean.since mean is given!! More easier and the final result comes as P=1 .Hence done!!!!
Put the values in the formula of mean.since mean is given!! More easier and the final result comes as P=1 .Hence done!!!!
Good