Parking at a university has become a problem. University administrators are inte
ID: 3301621 • Letter: P
Question
Parking at a university has become a problem. University administrators are interested in determining the mean time it takes students to find a parking spot. They randomly select every 20th student car coming onto campus. The time to find a parking place was recorded for each of the 150 chosen student cars.
a. (2 pts) What type of variable were data collected for?
b. (1 pt) State the name of a graph that would be appropriate for this type of data.
c. (2 pts) Assume the data collected form a bell-shaped distribution.
What measure of central tendency should be used to summarize the data?
What measure of variation should be used to summarize the data?
Explanation / Answer
Answer:
Parking at a university has become a problem. University administrators are interested in determining the mean time it takes students to find a parking spot. They randomly select every 20th student car coming onto campus. The time to find a parking place was recorded for each of the 150 chosen student cars.
a. (2 pts) What type of variable were data collected for?
Variable: time to find a parking spot. It is a continuous variable.
b. (1 pt) State the name of a graph that would be appropriate for this type of data.
Histogram.
c. (2 pts) Assume the data collected form a bell-shaped distribution.
What measure of central tendency should be used to summarize the data?
Mean.
What measure of variation should be used to summarize the data?
Standard deviation.
For bell shaped distribution, mean and standard deviations are appropriate measures of central tendency and variation.