- Submitted By: Laynebaril
- Date Submitted: 09/06/2016 12:22 AM
- Category: Business
- Words: 501
- Page: 3

Statistical Analysis Lesson

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QUESTION 1

From the histogram or ogive of the variable "Pay", the percentage of the sample paid more than $40000 is:

92.97%

22.68%

7.03%

0.96%

0.7 points

QUESTION 2

Which of the following chart types would be best to illustrate the frequency of distribution of the variable "Age"?

Pie chart

Scatter plot

Line graph

Histogram

Bar chart

0.65 points

QUESTION 3

Which of the following variables is an example of nominal data:

Age

Pay

Experience

Tenure

Gender

0.65 points

QUESTION 4

The most appropriate measure of central tendency when you have "outliers" or extreme values in your dataset is:

Median

Mean and mode

Harmonic Mean

Only the mode

0.65 points

QUESTION 5

Which of the following is an appropriate measure of variability for the variable Gender:

IQR

Range

25th percentile

Variance

None of the above

0.65 points

QUESTION 6

The skewness of the variable Experience is:

0.33

0.29

-0.22

-0.63

-3.33

0.65 points

QUESTION 7

The kurtosis of the variable Experience is:

-0.63

-0.09

-0.22

2.03

2.37

0.65 points

QUESTION 8

Using the mean and the standard deviation for the variable AGE, approximately what value would lie three standard deviations to the right of the mean and therefore be considered an "outlier"?

32

123

76

65

0.65 points

QUESTION 9

Based on the Empirical Rule, what proportion of a normally distributed sample lies within two standard deviations of the mean?

89%

95.0%

3.8%

2.6%

0.65 points

QUESTION 10

For a population comprising 30% males, what is the probabilility of drawing a random sample of 313 and getting more than 94 males? Hint: use the binomial distribution.

4.9%

30.0%...

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