# Stats Chapter 2 Online HW

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question
Does the frequency distribution appear to have a normal​ distribution? Explain. Temperature_ (F) Frequency 35-39 1 40-44 3 45-49 10 50-54 12 55-59 10 60-64 2 65-69 1
Yes, because the frequencies start​ low, proceed to one or two high​ frequencies, then decrease to a low​ frequency, and the distribution is approximately symmetric.
question
Does the result appear to have a normal​ distribution? Why or why​ not?
Yes, because the frequencies start low comma reach a maximum comma then become low again, and are roughly symmetric about the maximum frequency.
question
________are sample values that lie very far away from the majority of the other sample values.
outliers
question
Class width is found by​ _______.
subtracting a lower class limit from the next consecutive lower class limit
question
The histogram to the right represents the weights​ (in pounds) of members of a certain​ high-school programming team. How many team members are included in the​ histogram?
The histogram represents 18 programming team members. (the x-axis shows weight in pounds, but the y-axis is frequency)(you would count the frequency from each bar in the histogram to get total members).
question
The graph to the right compares teaching salaries of women and men at private colleges and universities. What impression does the graph​ create? Does the graph depict the data​ fairly? If​ not, construct a graph that depicts the data fairly. a.What impression does the graph​ create? b.Does the graph depict the data​ fairly?
a. The graph creates the impression that men have salaries that are more than twice the salaries of women. b. ​No, because the vertical scale does not start at zero.
question
The graph to the right uses cylinders to represent barrels of oil consumed by two countries. Does the graph distort the data or does it depict the data​ fairly? Why or why​ not? If the graph distorts the​ data, construct a graph that depicts the data fairly.
Yes, because the graph incorrectly uses objects of volume to represent the data.
question
The graph to the right shows the braking distances for different cars measured under the same conditions. Describe the ways in which this graph might be deceptive. How much greater is the braking distance of Car A than the braking distance of Car​ C? Draw the graph in a way that depicts the data more fairly. a. In what way might the graph be​ deceptive? b. How much greater is the braking distance of Car A than the braking distance of Car​ C?