The annual precipitation, as measured by the National Weather Service, for Green Ridge, Wisconsin was recorded by environmental scientists interested in climatological changes.
Enter the data, use your calculator to create a histogram (Stat, Edit, then 2nd, y=, select a histogram).
Use ‘window’ to clean up the distribution (Xmin=0, Xmax=60, Xscl=5, Ymin= -1, Ymax=8).
Use ‘graph’ to view the histogram.
Describe the histogram, select all that are correct.
Use the list of actual data for your spread (range).
Use the interval to show the center.
Remember to CUSS about the description, so there are four correct answers.
4 points
4
Question 2
2.
The annual precipitation, as measured by the National Weather Service, for Green Ridge, Wisconsin was recorded by environmental scientists interested in climatological changes.
Enter the data all into list 1, use your calculator to calculate the 5# summary.
Stat, edit, stat, calc, 1-var stats.
Make sure the list agrees with the location of your data.
List the 5# summary separating the numbers by commas.
Ex. 3.1, 5.3, 12.6, 15.4, 21.3
4 points
4
Question 3
3.
The annual precipitation, as measured by the National Weather Service, for Green Ridge, Wisconsin was recorded by environmental scientists interested in climatological changes.
Enter the data, use your calculator to calculate the mean (x-bar) and the standard deviation (Sx).
Stat, edit, stat, calc, 1-var stats.
Make sure the list agrees with the location of your data.
List the mean and standard deviation separated by commas. Round to three places past the decimal point.
Ex. 13.457, 11.231
4 points
4
Question 4
4.
The annual precipitation, as measured by the National Weather Service, for Green Ridge, Wisconsin was recorded by environmental scientists interested in climatological changes.
Think back to #1, the description of the histogram.
Which summary statistics (mean and Std Dev OR Median and IQR) would be appropriate for describing the data distribution?
Why?
Select the two correct answers.
4 points
4
Question 5
5.
The annual precipitation, as measured by the National Weather Service, for Green Ridge, Wisconsin was recorded by environmental scientists interested in climatological changes.
Refer to #2, the 5# summary.
Calculate the IQR.
Describe (interpret) what it shows.
Select the two correct answers.
4 points
4
Question 6
6.
The annual precipitation, as measured by the National Weather Service, for Green Ridge, Wisconsin was recorded by environmental scientists interested in climatological changes.
Refer to #2, the 5# summary.
Calculate the IQR.
Calculate the lower and upper fences.
List them separated by a comma: lower fence, upper fence.
Round to one place past the decimal.
Ex. 5.4, 45.3
4 points
4
Question 7
7.
The annual precipitation, as measured by the National Weather Service, for Green Ridge, Wisconsin was recorded by environmental scientists interested in climatological changes.
Refer to #2, the 5# summary.
Calculate the IQR.
Calculate the lower and upper fences.
Are there any outliers? If so, identify them.
4 points
4
Question 8
8.
The annual precipitation, as measured by the National Weather Service, for Green Ridge, Wisconsin was recorded by environmental scientists interested in climatological changes.
Refer to #2, the 5# summary, the IQR and the calculated lower and upper fences.
If the value of 74.1 inches of rain were added to the data, would it be an outlier?
How do you know?
4 points
4
Question 9
9.
The number of hours slepton the weekend was recorded for a statistics class. The data distribution is shown below:
Which summary statistics are appropriate for describing the data distribution?
Why?
Select the correct answer below.
4 points
4
Question 10
10.
The number of hours slepton the weekend was recorded for a statistics class. The data distribution is shown below:
If a student missed class but added his data the next day, he slept only 2 hours because he had a huge project due on Monday. What statistics would be changed and how?
Median
Range
IQR
Mean
Standard Deviation
Remain roughly the same
Increase
Decrease
4 points
4
Question 11
11.
The number of hours slepton the weekend was recorded for a statistics class. The data distribution is shown below:
Using the graphed data above, how many students were present on the day the data was collected?
What is the range as a single number?
Enter both below separated by a comma.
Ex. # students, range
4 points
4
Question 12
12.
The annual precipitation, as measured by the National Weather Service, for Green Ridge, Wisconsin was recorded by environmental scientists interested in climatological changes.
