Thursday

August 21, 2014

August 21, 2014

Posted by **Rubi** on Sunday, June 30, 2013 at 2:51pm.

a. Suppose the standard deviation of a set of times we run the program is 0. What does this tell you about the running times?

b. Suppose that the mean of the times is 1000.9 sec while the median is 1 sec. Explain what do you know about the program running times for all 10 different inputs?

c. Assume now that the mean of the times is 1000.9 sec while the median is 1 sec and the variance is 9998000. Explain what do you know about the program running times for all 10 different inputs

Can someone help me with step by step solution to this problem. Thank you in advance.

- Statistics -
**PsyDAG**, Monday, July 1, 2013 at 1:29pm1000.9 seconds = 16.68 minutes

a. They are all on the mean.

b. Distribution is extremely skewed.

c. SD = √variance, but it is only an accurate estimate of variability for a normal distribution.

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