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Question 11.In recent versions of Excel (2010 and higher), which function should you use to calculate variance for a set of data?

Question 22.The function STANDARDIZE requires which three data elements?

Question 33.Which of the following Excel functions will give you the variance of the population as a whole, versus individual elements?

Question 44._____ of normally distributed data is always contained within 2 standard deviations of the mean.

Question 55._____ of normally distributed data is always contained within 1 standard deviation of the mean.

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Question 66.Six Sigma seeks to limit errors to occur only outside of _____ standard deviations.

Question 77.'Variance' is similar to 'standard deviation' in all the following ways EXCEPT:

Question 88.Range, standard deviation, and variance are 'similar' in that each looks at

Question 99.Professor Dublin wants to ensure he is thorough in his review of student performance, so he decides to calculate 'standard deviation' as well. What must Professor Dublin do to figure out this measure of variability?

Question 1010.

Find the variance for the following data set:

16, 20, 14, 24, 16, 19, 30, and 8

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Question 1111.

Find the standard deviation for the following data set:

101, 106, 125, 142, 78, and 109

Question 1212.

Find the variance for the following data set:

101, 106, 125, 142, 78, and 109

Question 1313.When calculated for a normal distribution, how do the values for Chebyshev's theorem compare to the 68-95-99.7 rule of thumb?

Question 1414.What attribute of data is quantified using Chebyshev's inequality?

Question 1515.What type of data distribution is not appropriate to use with Chebyshev's inequality?

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Question 1616.What attribute is measured by an analysis of the variance found in yearly investment returns?

Question 1717.What is the difference between variance computed for sampled data and full population data?

Question 1818.What is the variance that would be calculated from 5 data points that all had the same value?

Question 1919.There are 30 students in Alice's math class. If the students' marks on the last test exhibit a normal distribution, and the average grade was 75%, then how many students scored within one standard deviation of 75%?

Question 2020.The mean of a graph with a normal distribution is located where?

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Question 2121.What percentage of the data is within three standard deviations to the left and right of the middle of a graph with a normal distribution?

Question 2222.In a business context, normally distributed data can be used to accomplish all of the following EXCEPT:

Question 2323.When plotted data points fall primarily inside the boundaries of this chart (sometimes called a bell curve), it is indicative that the data can be characterized as _____.

Question 2424.Which statement about these two datapoints is TRUE?

Question 2525.Where is the normal distribution curve at its highest point?

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Question 2626.Which has the lowest area under it?

Question 2727.What is a Z-score?

Question 2828.If the standard deviation is 5, the mean is 40, and the value in question is 45, then what is the Z-score?

Question 2929.Negative Z-scores appear on the _____ side of the normal distribution.

Question 3030.Which side of the normal distribution does the positive Z-score appear on?

Measures of Dispersion in Business Chapter Exam Instructions

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