STAT 200 Examination Check point 01hi

 

 

 

Examining Distributions Checkpoint 1

This histogram shows the times, in minutes, required for 25 rats in an animal behavior experiment to successfully navigate a maze.

What percentage of the rats navigated the maze in less than 5.5 minutes?

 

Question 2

This histogram shows the times, in minutes, required for 25 rats in an animal behavior experiment to successfully navigate a maze.

Which of the following best describes the shape of the histogram?

Question 3

This histogram shows the times, in minutes, required for 25 rats in an animal behavior experiment to successfully navigate a maze.

For the data described by the above histogram, which of the following is a correct statement about the median? 

Question 4

This histogram shows the times, in minutes, required for 25 rats in an animal behavior experiment to successfully navigate a maze.

Which of the following is a possible value of the median in this example?

Question 6

A survey was conducted to determine the number of servings of vegetables eaten, per day, by adolescents in the United States. The following table shows the results:

What is the modal number of vegetable servings eaten, per day, by adolescents in the United States?

Question 5

This histogram shows the times, in minutes, required for 25 rats in an animal behavior experiment to successfully navigate a maze.

Assume that the largest observation in this dataset is 8.6 minutes. If this observation were wrongly recorded as 86, then what would happen to the mean and median?

 

 

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