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Submitted by indigo11 on Thu, 2013-11-07 14:10
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QMB 6357 Harvard final exam practice

. The median is often a better representative of the central value of a data set when the data set:

Source

            
Is bimodal.

            
Has a high standard deviation.

            
Is highly skewed.





2. The data in the Excel spreadsheet linked below provide information on the nutritional content (in grams per serving) of some leading breakfast cereals. 

For which nutrients is the mean nutrient content per serving greater than the median nutrient content per serving?

Breakfast Cereals

Source

            
Proteins only.

            
Complex carbohydrates only.

            
Both nutrients.

    Neither nutrient.
Has no outliers.



 3   The histogram below plots the carbon monoxide (CO) emissions (in pounds/minute) of 40 different airplane models at take-off. 

The distribution is best described as is:

Source

 

            
Uniform.

            
Heteroskedastic.

            
Normal.

    
Skewed right.





4.

4. The histogram below plots the carbon monoxide (CO) emissions (in pounds/minute) of 40 different airplane models at take-off. 

Which of the following statements is the best inference that can be drawn from this histogram?

Source

 

            
The mean amount of carbon monoxide emissions is greater than the median amount of carbon monoxide emissions.

            
The mean amount of carbon monoxide emissions is less than the median amount of carbon monoxide emissions.

            
The mean and median amounts of carbon monoxide emissions are about equal.

    The relative sizes of the mean and median amounts of carbon monoxide emissions cannot be inferred from the histogram

and other quest

Answer
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QMB 6357 Harvard final exam practice

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QMB xxxx xxxxxxx final exam xxxxxxxx

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1. The median is often a better xxxxxxxxxxxxxx xx the central value xx x data xxx when the data xxxxxxx of xxxx

Is xxxxxxxx

Has a xxxx standard xxxxxxxxxx

Is highly xxxxxxx

Has no outliers. Bottom of Form

2. xxx xxxx xx the Excel spreadsheet linked below xxxxxxx xxxxxxxxxxx on the xxxxxxxxxxx xxxxxxx xxx xxxxx xxx serving) of xxxx xxxxxxx breakfast cereals. xxx xxxxx xxxxxxxxx xx xxx mean nutrient content xxx serving xxxxxxx xxxx the xxxxxx nutrient xxxxxxx xxx serving?

xxx of Form

A) Proteins xxxxx

B) Complex xxxxxxxxxxxxx only.

C) Both xxxxxxxxxx

xx xxxxxxx nutrient.

xx xxx histogram xxxxx plots the carbon xxxxxxxx (CO) xxxxxxxxx xxx xxxxxxxxxxxxxx of 40 xxxxxxxxx xxxxxxxx xxxxxx xx xxxxxxxxx

xxx xxxxxxxxxxxx is xxxx xxxxxxxxx as xxxx

xxx xx xxxx

xxxxxxxx

Heteroskedastic.

Normal.

xxxxxx right

4. xxx xxxxxxxxx above xxxxx xxx carbon monoxide xxxx emissions (in pounds/minute) xx 40 different xxxxxxxx xxxxxx xx xxxxxxxxx xxxxx xx the following statements is the

- - - more text follows - - -


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