Straighter Line Statistics
The histogram below displays the distribution of 50 ages at death due to trauma (accidents and
homicides) that were observed in a certain hospital during a week.
What percentage of deaths were individuals younger than 35? - ✔✔ correct answer 68%
From the histogram we can find that 3 + 18 + 13 = 34 out of the 50 observations fall below age 35
(those within the first three bars), and since the question asks about the percentage of observations,
the answer is (34/50) * 100 = 68%.
Here again is the histogram showing the distribution of 50 ages at death due to trauma (accidents
and homicides) that were observed in a certain hospital during a week.
Which of the following best describes the shape of the histogram? - ✔✔ correct answer Right-
skewed with a possible outlier
The histogram displays a tail to the right (i.e., it is skewed right) with one isolated observation at
around 90 years, which is possibly an outlier.
Here again is the histogram showing the distribution of 50 ages at death due to trauma (accidents
and homicides) that were observed in a certain hospital during a week.
For the data described by the above histogram, - ✔✔ correct answer (B) the median will be smaller
than the mean
Remember that we'd expect the mean and the median to be nearly the same only if the distribution
were nearly symmetric. But notice this distribution is skewed to the right (the tail is towards the
right) and we also see a suspected outlier on the right side. Remember that both of these shape
features will tend to pull the mean more than they would pull the median.
Here again is the histogram showing the distribution of 50 ages at death due to trauma (accidents
and homicides) that occurred in a certain hospital during a week.
A possible value of the median in this example is: - ✔✔ correct answer 33
The histogram below displays the distribution of 50 ages at death due to trauma (accidents and
homicides) that were observed in a certain hospital during a week.
What percentage of deaths were individuals younger than 35? - ✔✔ correct answer 68%
From the histogram we can find that 3 + 18 + 13 = 34 out of the 50 observations fall below age 35
(those within the first three bars), and since the question asks about the percentage of observations,
the answer is (34/50) * 100 = 68%.
Here again is the histogram showing the distribution of 50 ages at death due to trauma (accidents
and homicides) that were observed in a certain hospital during a week.
Which of the following best describes the shape of the histogram? - ✔✔ correct answer Right-
skewed with a possible outlier
The histogram displays a tail to the right (i.e., it is skewed right) with one isolated observation at
around 90 years, which is possibly an outlier.
Here again is the histogram showing the distribution of 50 ages at death due to trauma (accidents
and homicides) that were observed in a certain hospital during a week.
For the data described by the above histogram, - ✔✔ correct answer (B) the median will be smaller
than the mean
Remember that we'd expect the mean and the median to be nearly the same only if the distribution
were nearly symmetric. But notice this distribution is skewed to the right (the tail is towards the
right) and we also see a suspected outlier on the right side. Remember that both of these shape
features will tend to pull the mean more than they would pull the median.
Here again is the histogram showing the distribution of 50 ages at death due to trauma (accidents
and homicides) that occurred in a certain hospital during a week.
A possible value of the median in this example is: - ✔✔ correct answer 33
