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QUESTION:

he following 6 questions relate to the same histogram, shown below.

Question 1 of 6

Question 1

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

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

Question 2 of 6

Question 2

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What is the largest time recorded in this dataset?

Question 3 of 6

Question 3

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Here again is the histogram showing the distribution of times, in minutes, required for 25 rats in an animal behavior experiment to navigate a maze successfully.

unlabelled image

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

Here again is the histogram showing the distribution of times, in minutes, required for 25 rats in an animal behavior experiment to navigate a maze successfully.

unlabelled image

For the data described by the above histogram,


Here again is the histogram showing the distribution of times, in minutes, required for 25 rats in an animal behavior experiment to navigate a maze successfully.

unlabelled image

possible value of the median in this example is:


Here again is the histogram showing the distribution of times, in minutes, required for 25 rats in an animal behavior experiment to navigate a maze successfully. 

unlabelled image

Assume that the largest observation in this dataset is 8.6 minutes. If this observation were wrongly recorded as 86, then:


ANSWER:

84%

Good job! From the histogram we can find that 3 + 8 + 6 + 4 = 21 out of the 25 rats fall below 5.5 minutes (first four bars). Since the question asks about the percentage of observations, the answer is 21/25 * 100 = 84%

Q2

This information is not provided by the histogram

Q3

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


Q4

For the data described by the above histogram,

Q5

possible value of the median in this example is:

Q6

Assume that the largest observation in this dataset is 8.6 minutes. If this observation were wrongly recorded as 86, then:



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