MATH302 Statistics Questions

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Question 1 of 20
1.0 Points
The total frequency of the data whose ogive is shown below is approximately

 
 
 
 
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Question 2 of 20
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A histogram that has a single peak and looks approximately the same to the left and right of the peak is called:
 
 
 
 
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Question 3 of 20
1.0 Points
The length of the box in the boxplot portrays the
 
 
 
 
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Question 4 of 20
1.0 Points
Given the following boxplot where m is the median value, what statement could be made about the distribution of the data?


 
 
 
 
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Question 5 of 20
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Which of the following statements is true regarding the data set 10, 10, 10, 10, and 10?
 
 
 
 
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Question 6 of 20
1.0 Points
A scatterplot allows one to see:
 
 
 
 
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Question 7 of 20
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The difference between the first and third quartile is called the
 
 
 
 
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Question 8 of 20
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Suppose that a histogram of a data set is approximately symmetric and "bell shaped". Approximately what percent of the observations are within one standard deviation of the mean?
 
 
 
 
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Question 9 of 20
1.0 Points
For a boxplot, the vertical line inside the box indicates the location of the
 
 
 
 
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Question 10 of 20
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An advertisement for a car states that it is 10% more powerful than its competitor. This is an example of
 
 
 
 
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Question 11 of 20
1.0 Points
Which measure of central location is meaningful when the data are categorical?
 
 
 
 
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Question 12 of 20
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A sample of 20 observations has a standard deviation of 4. The sum of the squared deviations from the sample mean is:
 
 
 
 
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Part 2 of 3 -
 
Question 13 of 20
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Accepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker. 
Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values. 
For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not. 

A sample of 150 students at a State University was taken after the final business statistics exam to ask them whether they went partying the weekend before the final or spent the weekend studying, and whether they did well or poorly on the final. The following table contains the result.

 Did Well on ExamDid Poorly on Exam
Studying for Exam6015
Went Partying2253

If the sample is a good representation of the population, what percentage of the students in the population should we expect to spend the weekend studying and do poorly on the final exam? 
 Place your answer in the blank, rounded to 2 decimal places. Do not use a percentage sign (%). For example, 44.44 would be a legitimate answer. 
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Question 20 of 20
1.0 Points
Phone numbers, Social Security numbers, and zip codes are examples of numerical variables
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