statistic practice questions, Exercises of Statistics

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Typology: Exercises

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1. The following table gives the highest temperatures on record for selected cities:
For each of the above column headings, identify whether the variables are
categorical (ordinal, or nominal) and quantitative (discrete or continuous).
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1. The following table gives the highest temperatures on record for selected cities:

For each of the above column headings, identify whether the variables are categorical (ordinal, or nominal) and quantitative (discrete or continuous).

2. The following table gives the best-selling albums of 1999 and the numbers

sold: For each of the above column headings, identify whether the variables are categorical (ordinal, or nominal) and quantitative (discrete or continuous).

3. Which of the following graph(s) could you use to study the following

situations? (List all that apply)  Bar Graph  Pie Chart  Histogram  Stem and leaf plot  back-to-back stemplot  timeplot a. What makes of cars do students drive? b. How old are students' cars? c. How does the price of the Canadian dollar change (relative to the U.S. dollar) over the year? d. What is the number of medals won by each country participating in the Winter Olympics? e. Compare the number of forest fires between Manitoba and Saskatchewan. f. The grade point average of the students of ICM, comparing girls and boys g. Te weight of the students' laptops.

what is the new mean and standard deviation? (show your work but no need to show the steps on the calculator here).

8. In January 2010 the fines for speeding tickets went up in the city of Winnipeg.

If you are caught going over the posted limit, you will be charged a fine of $150, plus $6.90 per km/h over the speed limit. The fine for a speeding ticket Y is then, Y = 150 + 6.90 X, where X is the number of km/h you are over the posted speed limit. The following are the number of kilometers over the posted limit from a sample of six drivers. 15 9 21 8 7 12 a. What is the mean and standard deviation of the number of kilometers over the posted limit from the above sample? (Show All Your Work). b. Using the linear transformation given above, what is the mean and standard deviation of the fines for a speeding ticket?