Calculate the Average Mean Temperature, Basic Statistics

The following are actual data showing the latitude of a sample of major cities in the northern hemisphere and their mean high annual temperature.

latitude(X) mean high temp(Y)
1. Acapulco 17 88
2. Algiers 37 76
3. Berlin 53 55
4. Bogota 5 66
5. Montreal 46 50
6. Oslo 60 50
7. Rome 42 71
8. Saigon* 11 90
* Now known as Ho Chi Minh City.


(a) Compute and write the prediction regression equation (note: do not just refer to spss output—write out the full equations)
(i) In unstandardized form (For every increase in ___, x goes up by ____)
(ii) In standardized form (units)

(b) Calculate the predicted mean temperature (degrees F) for each city.

(c) Test the b1 coefficient; Calculate and test R2
Report results of these tests in a short APA results-style paragraph

(d) Plot Y (vertical axis) vs. X (horizontal axis) showing best fitting straight line

(e) Report standard measures of leverage (X space), studentized deleted residuals (Y space), and SDFFITS (influence) for each city.

(f) Examine your plots. Consider your expectations, the obtained values of r and b1, the plots, and your outlier statistics. Do any of the cities appear to be having a particularly strong influence on the results? If so, which one(s) and why?

(g) Drop the point(s) identified in (f) from the data analysis and using SPSS re-compute r and b1. Test the new b1 coefficient; Calculate and test the new R2. Report the results of these tests in a short APA results-style paragraph, and describe how do the results change?

(h) In general, are you justified in dropping data? When is it appropriate vs. inappropriate? Comment on why this procedure of dropping one or more cities may or may not be appropriate in the present case (Hint: consider the altitudes—not latitudes-- of the cities).
Posted Date: 3/1/2013 5:06:18 PM | Location : United States







Related Discussions:- Calculate the Average Mean Temperature, Assignment Help, Ask Question on Calculate the Average Mean Temperature, Get Answer, Expert's Help, Calculate the Average Mean Temperature Discussions

Write discussion on Calculate the Average Mean Temperature
Your posts are moderated
Related Questions
(b) P(X = 8)

The following data relating cigarette smoking and death rates for lung cancers in 14 states in the USA. The data are based in part on records concerning 1960 cigarette tax receipts

1. A researcher was interested lowering the high school dropout level in his county. He measured the reading level of students entering middle school (based on a standard test) and

Holding period return: Holding period return is the return earned by the virtue of holding an asset over a given period. The return is equal to the income and other gains earned fr


Q. How to Choose a Sample? The way a sample is chosen is extremely important in all statistical studies. This is because, ultimately, all the inferences will be based on the s

Which of the following statements are correct interpretations of a 95% confidence interval for μ? (a) 95% of the observations in the sample will be contained in the confidence i

In a certain lake a limnologist wishes to estimate the proportion of lake trout with lamprey scars. (a) How large of a random sample should be taken if the limnologist has no pr

A business starts out with a cash balance of £1,000. It then makes the following transactions: Buys inventory on credit for £500 Sells a non-current asset for £100 cash Sells goods

Q. What is Univariate and Bivariate Data? Ans. Univariate data is data gathered about a single variable. Univariate studies could include a study of the amount paid by Am