Determining percent of values using chebyshev-s theorem

Reference no: EM1320667

Q1) You are given following frequency distribution for number of errors 55 students made in a test

Errors	Frequency
0-2	11
3-5	14
6-8	9
9-11	4
12-14	7

Determine:

a) Mean,

b) Variance

c) Standard deviation.

a) Use Chebyshev's theorem to determine what percent of values will fall between 58 and 82 for data set with mean of 70 and standard deviation of 4.

b) Use Empirical Rule to determine what two values 95% of data will fall between for a data set with mean 152 and standard deviation of 11.

Reference no: EM1320667

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