population of 700

Class

-20 up to -10

-10 up to 0

0 up to 10

10 up to 20

Frequency

.32

.22

.36

.10

What is the question please

Sorry....find mean variance standard deviation

mean=-2.6

variance=111.6

standard deviation=10.564

hey..i have already sent the answers

Thank you....can u plz send details on how u got answer

=-260/100=-2.6

variance =(sum of fx^2/sum of f)-(sum of fx/sum of f)

=(10900/100)-(-260/100)

=109-(-2.6)

=109+2.6

=111.6

standard variance=square root of variance

standard variance=10.564

hey...i have done the work

have you seen the work?

Yes....will review for my understanding.. I appreciate your help

can i please get the payment..?

Will send later this evening

ok

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