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using the RRSP database, construct a histogram for the variable Average Age of RRSP Contributors. How is the histogram shaped? Is it high in the middle or high near one or both ends of the data? Is it relatively constant in size across the class (uniform), or does it appear to have no shape? Does it appear to be nearly “normally” distributed?
using the Canadian Stock Market Database, construct a histogram for the variable Energy Index. How is the histogram shaped? Is it high in the middle or near one or both of the endpoints? Is it relatively constant in size across the classes (uniform) or does it appear to have no shape? Does it appear to be normally distributed?
using the International Labour Database, construct a stem and leaf plot for the United Kingdom. What does the plot show about unemployment in the United Kingdom over the past 30 years?
use the RRSP Database. Using measures of central tendency including the mean, median, and mode, describe the annual total RRSP contribution.
For the Canadian Stock Market Database, describe the Composite Index variable. Include measures of central tendency, variability, and skewness. What did you find?
Using the Financial Database, study Price per Share for Industry Types 2 and 7. The industry types are listed in Analyzing the Databases in Chapter 1. Compute a coefficient of variation for Type 2 and for Type
Compare the two coefficients and comment.
The Financial Database contains financial data on 100 companies. Use this database as a sample and estimate Price per Share for all corporations from these data. Select several levels of confidence and compare the results.
using the Financial Database with its sample of 100 companies, construct a 95% confidence interval to estimate the population proportion of companies that belong to industry type 4. State the point estimate and the error of the estimate. Change the level of confidence to 90%. What happens to the interval? Did the point estimate change?
use the RRSP Database. Suppose a researcher wants to determine if the average of the total annual RRSP contribution is not equal to 2,389,147 ($*1,000). Use the province of New Brunswick in the RRSP Database as a sample, and perform a hypothesis test at a 1% level of significance. Assume that annual RRSP contribution is normally distributed in the population.
Fifteen years ago, the average production in Canada for durum wheat was 270,770 pounds per month. Use the last 12 months in the Agri-Business Canada Database as a sample to test to determine whether the mean monthly production figure for durum wheat in Canada is now different from the old figure. Let a=0.01. Assume that the monthly production of durum wheat is normally distributed in the population.
