Need statistics help to find the mean, variance and standard deviation of the given data

Statistics
Tutor: None Selected Time limit: 1 Day

1. Find the mean, variance and standard deviation of the given data. 

(1) Overtime Hours The number of overtime hours worked in one week per employee. 

Overtime hours 0 1 2 3 4 5 6 

Employee 6 12 29 57 42 30 16 

(2) Television The number of televisions per household in a small town. 

Televisions 0 1 2 3 

Households 26 442 728 1404

Dec 1st, 2015

Thank you for the opportunity to help you with your question!

Looks like the data is incorrect
Mean = Summation(mf)/N
Variance = {Summation(m^2 f) - (mf)^2}/N
Standard deviation = Sqrt(variance)


Please let me know if you need any clarification. I'm always happy to answer your questions.
Dec 1st, 2015

hi thank you again, yes i need assistance i need this one. The overtime hours and employee is suppose to be charts lined up but it doesnt let me copy & past the chart. does that make more sense now? thank youuuu!

Dec 2nd, 2015

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