Business Statistics And Research Methods - Practice Test

[#431] Convert the annual trend equation "Y = 30 + 3.6x" into monthly trend equation

(A) Y = 2.5 + 0.3x

(B) Y = 2.5 + 0.025x

(C) Y = 30 + 0.3x

(D) Y = 2.5 + 3.6x

Correct Answer

(B) Y = 2.5 + 0.025x

[#432] According to an important research opinion, an alternative criterion for evaluating qualitative research would be:

(A) tidiness

(B) trustworthiness

(C) impressiveness

(D) use of mathematics

Correct Answer

(B) trustworthiness

[#433] There is a very high inverse relationship between measures of 'overweight' and 'life expectancy'. Which one of the following value of the coefficient of correlation is consistent with the statement?

(A) 0.80

(B) 0.20

(C) - 0.20

(D) - 0.80

(E) 0.80

(F) 0.20

(G) -0.20

(H) -0.80

Correct Answer

(A) 0.80
(H) -0.80

[#434] The formula to determine the number of classes given by Sturge's rule is which one of the following? Where, $$K$$ = Number of classes $$N$$ =Total number of observations $$left( {log ,N}
ight)$$xa0 = Logarithm of the total number of observations

(A) $$K = 1 + 3.322left( {log ,N} ight)$$

(B) $$K = left( {log ,N} ight)1.322$$

(C) $$K = frac{{1 + 3.322}}{{left( {log ,N} ight)}}$$

(D) $$K = frac{{3.322}}{{left( {log ,N} ight) + 1}}$$

Correct Answer

(A) $$K = 1 + 3.322left( {log ,N} ight)$$

[#435] Which type of data is not suited for calculation of Karl Pearson's correlation coefficient?

(A) Nominal

(B) Ordinal

(C) Interval

(D) Ratio

Correct Answer

(A) Nominal

Business Statistics And Research Methods - Study Mode

[#431] Convert the annual trend equation "Y = 30 + 3.6x" into monthly trend equation

Correct Answer

[#432] According to an important research opinion, an alternative criterion for evaluating qualitative research would be:

Correct Answer

[#433] There is a very high inverse relationship between measures of 'overweight' and 'life expectancy'. Which one of the following value of the coefficient of correlation is consistent with the statement?

Correct Answer

[#434] The formula to determine the number of classes given by Sturge's rule is which one of the following? Where, $$K$$ = Number of classes $$N$$ =Total number of observations $$left( {log ,N} ight)$$xa0 = Logarithm of the total number of observations

Correct Answer

[#435] Which type of data is not suited for calculation of Karl Pearson's correlation coefficient?

Correct Answer

[#434] The formula to determine the number of classes given by Sturge's rule is which one of the following? Where, $$K$$ = Number of classes $$N$$ =Total number of observations $$left( {log ,N}
ight)$$xa0 = Logarithm of the total number of observations