Mean = 79
Standard Deviation = 23

Using chebyshevs theorem, what percentage use less than 102 units ? Using empirical law, what percentage use less than 102 units?

Question

Mean = 79
Standard Deviation = 23

Using chebyshevs theorem, what percentage use less than 102 units ? Using empirical law, what percentage use less than 102 units?

anonymous · Answer

Mean would make 4

anonymous · Answer

What would be 4? I'm looking for percentages.

thadds2003 · Answer

What subject is this?

thadds2003 · Answer

@amyvincent12

anonymous · Answer

Intro to stats

thadds2003 · Answer

Ok, so fist things first, Lets highlight the key words. Can you find some?

anonymous · Answer

i would know how to do it if it gave me the interval numbers (say between 56 and 102) because chebyshevs says there is no useful info in that interval and empirical would be 68% but where it is less than I don't know how to do that. How do I look at intervals then ?

anonymous · Answer

@Thadds2003

thadds2003 · Answer

I really dont know. But Ill try, @mathmale

mathmale · Answer

I'd advise that you graph a normal curve showing the divisions predicted by the empirical rule: plus or minus one std. dev. about the mean, plus or minus two std. devs. about the mean, and so on.  Once you've done that, mark 102 on the horiz. axis.  How would you go about determining the percentage of values less than 102?