1. If the coefficient of determination is 25%, the correlation
between two continuous variables is
a) -5
b) 5
c) -.25
d) .25
e) a or b
f) none of the above
2. To assess the correlation between height and weight, one
should use
a) spearman correlation
b) regression equation
c. pearson correlation
d) point biserial correlation
3. For a computed r = -0.547, given a dataset of n =
16, alpha = .05, and two-tailed significance, one should fail...
1. If the linear correlation coefficient of two variables is
zero, then there is no _______________ relationship between the
variables. A linear correlation coefficient of 0.92 suggests a
________________ linear relationship than a linear correlation
coefficient of -0.86. The value of the ___________________ always
lies between -1 and 1, inclusive. If the linear correlation
coefficient of the regression line is negative, then the
____________________ of the least squares (linear) regression line
must be negative. Give a detailed interpretation of the...
Why is it advisable to generate a scatterplot before computing a
correlation coefficient between two variables? Describe how a
scatterplot might differ when viewing correlations that represent
positive, negative, and no relationship between predictor and
criterion variables. Is it possible to have a relation between
variables that systematic (i.e., reliable and predictable) yet not
linear?
Why is it advisable to generate a scatterplot before computing a
correlation coefficient between two variables? Describe how a
scatterplot might differ when viewing correlations that represent
positive, negative, and no relationship between predictor and
criterion variables. Is it possible to have a relation between
variables that systematic (i.e., reliable and predictable) yet not
linear?
A) Differentiate between perfect negative correlation and
perfect positive correlation.
B) Explain the concept of diversification in investment
portfolio.
C) What are the two (2) advantages of Payback Period?
D) Amaryllis Incorporated is attempting to evaluate the
feasibility of investing RM95,000 in a piece of equipment that has
a 5-year life. The firm has estimated cash inflows
associated with the proposal as shown in the following table.
The firm has a 12% cost of capital.
A) Differentiate between perfect negative correlation and
perfect positive correlation.
B) Explain the concept of diversification in investment
portfolio.
C) What are the two (2) advantages of Payback Period?
1. The linear correlation coefficient r measures of the linear
relationship between two variables. (a) Distance (b) size (c)
strength (d) direction 2. 10 pairs of sample data were obtained
from a study which looked at household income and the number of
people in the household who smoked (cigarettes). The value of the
linear correlation coefficient r was computed and a result of -
0.989 was obtained. All of the following (below) are conclusions
that can be drawn from the...
1. The linear correlation coefficient r measures of the linear
relationship between two variables. (a) Distance (b) size (c)
strength (d) direction 2. 10 pairs of sample data were obtained
from a study which looked at household income and the number of
people in the household who smoked (cigarettes). The value of the
linear correlation coefficient r was computed and a result of -
0.989 was obtained. All of the following (below) are conclusions
that can be drawn from the...
1. The linear correlation coefficient r measures of the linear
relationship between two variables. (a) Distance (b) size (c)
strength (d) direction 2. 10 pairs of sample data were obtained
from a study which looked at household income and the number of
people in the household who smoked (cigarettes). The value of the
linear correlation coefficient r was computed and a result of -
0.989 was obtained. All of the following (below) are conclusions
that can be drawn from the...