Question
Researchers recorded the following 15 survival times (in days) of lab rats infected with a deadly...
Researchers recorded the following 15 survival times (in days) of lab rats infected with a deadly bacillus in a test of resistance to infection.
4.2 4.3 4.6 4.8 5.3 5.4 5.5 5.6 5.9 6.0 6.2 6.6 6.7 6.9 7.4
a. Graph a box plot after finding the five-number summaries. Clearly label the plot.
b. Compute the skewness measure and comment whether the distribution of data is symmetrical or skewed.
Skewness:
Comment:
c. Use your calculator to compute mean of data. Comment which of
mean or median is a better representation of
center of data.
Mean:
Comment:
Homework Answers
Answer #1
b)
the given distribution is positively skewed.
C) Median is a better representation of centre of data.
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