ECO253 Past Questions

ECO253

ANOVA is another name for
Answer: f-test

For PearsonVs correlation coefficient is based on pairs of measurement (x,y) and the data is entered in 2 columns, each
pair in a row.
Answer: 2

If Total Sum of Squares (TSS) is 151.8096 and Between Sample Sum of Squares (BSSS) is 4.1048, calculate Within Sample (Error) Sum of Square (WSSS)
Answer: 8.04

The term is interpreted in accordance with the principle of least squares which involves minimising the sum of the squares of the residuals or the errors of the estimates
Answer: best fit

Non-parametric models differ from parametric models in that the model structure is not specified but is instead determined from data
Answer: a priori

Prices of shares of a company on the different days in a month were found to be:44.6, 43.5, 42.4, 41.3, 40.2, 39.1, 38, 36.9, 35.8, 34.7 and 33.6 . What is the mean price of the price of the shares in the month?
Answer: 39.1

Calculate Within Sample (Error) Sum of Square (W.S.S.S) if T.S.S. is 231.7076 and B.S.S. is 12.9076
Answer: 218.8

Correlation coefficients have a value between
Answer: -1 and +1

Which of the following is NOT a method of studying correlation?
Answer: karl marxâ€~s coefficient of correlation.

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