Question
Please help me with these MCQs- A negative least-squares regression line slope value reflects a(n) ________ relationship between the independent and dependent variables. a) direct
Please help me with these MCQs-
A negative least-squares regression line slope value reflects a(n) ________ relationship between the independent and dependent variables.
a) | direct |
b) | weak |
c) | curvilinear |
d) | inverse |
e) | formless |
Question 2 (1 point)
The symbol used to represent lambda is ________.
Question 2 options:
a) |
b) |
c) |
d) |
e) |
Question 3 (1 point)
For lambda, E2 refers to ________.
a) | the error reduction that occurs when the independent variable and its relationship to the dependent variable are considered |
b) | the number of cases that do not fall into the modal category of the dependent variable |
c) | the number of cases that do not fall into the modal categories of the conditional distributions of the independent variable |
d) | the number of cases that fall into the modal categories of the conditional distributions of the independent variable |
e) | the number of cases that fall into the modal category of the dependent variable |
Question 4 (1 point)
The ________ the relationship the independent variable has to the dependent variable, the ________ will be the reduction in prediction errors.
a) | The statement indicates a false relation, as there is no systematic connection between the strength of the independent-dependent variable relationship and the number of prediction errors. |
b) | weaker; greater |
c) | stronger; smaller |
d) | stronger; greater |
Question 5 (1 point)
Following gamma's marginal prediction rule, the number of correctly predicted ordered pairs will be ________ the number of incorrectly predicted ordered pairs.
a) | greater than |
b) | less than |
c) | sometimes greater than and sometimes less than |
d) | sometimes equal to and sometimes not equal to |
e) | equal to |
Question 6 (1 point)
The intercept is ________.
a) | always equivalent to (0,0) |
b) | (change in dependent variable) (change in independent variable) |
c) | undefined for a straight line |
d) | the point where the best-fit regression line crosses the axis of the dependent variable |
e) | the point where the best-fit regression line crosses the axis of the independent variable |
Question 7 (1 point)
The slope is ________.
a) | the point where the best-fit regression line crosses the axis of the dependent variable |
b) | always equivalent to (0,0) |
c) | undefined for a straight line |
d) | the point where the best-fit regression line crosses the axis of the independent variable |
e) | (change in dependent variable) (change in independent variable) |
Question 8 (1 point)
If there are more same order pairs than opposite order pairs in a data set then the sign of gamma will be ________.
a) | positive |
b) | negative |
c) | neither positive nor negative |
d) | indefinite |
Question 9 (1 point)
If a least-squares regression line has a slope of 3, this means that a 3-unit change in the independent variable will correspond to a ________-unit change in the dependent variable.
a) | 1 |
b) | 6 |
c) | 3 |
d) | 9 |
e) | 1/3 |
Question 10 (1 point)
Regression lines that have ________ and ________ are indicative of a stronger relationship between the independent and dependent variables.
a) | steeper slopes; larger intercepts |
b) | more horizontal slopes; greater precision |
c) | steeper slopes; lower precision |
d) | more horizontal slopes; lower precision |
e) | steeper slopes; greater precision |
Question 11 (1 point)
The ________ indicate(s) how well the least-squares regression line fits the data points.
a) | magnitude (absolute value) of the slope |
b) | magnitude (absolute value) of the correlation coefficient |
c) | directional sign of Pearson's r |
d) | directional sign of the slope |
Question 12 (1 point)
In regression analysis, r2 is ________.
a) | ESS |
b) | the correlation coefficient |
c) | USS |
d) | the coefficient of determination |
e) | TSS |
Question 13 (1 point)
Selecting the appropriate PRE statistic depends on the ________.
a) | slope of the best-fit line |
b) | marginal prediction rule |
c) | directionality of the research hypothesis |
d) | level of measurement of the variables involved |
e) | number of attributes of the dependent variable |
Question 14 (1 point)
In scatterplot analysis, if you only have information about the dependent variable's scores, and you want a general rule for predicting each case's dependent variable score, the best rule is to predict the ________.
a) | range |
b) | intercept |
c) | mean |
d) | median |
e) | slope |
Question 15 (1 point)
The marginal prediction rule for lambda is: ________.
a) | Predict the mode of each conditional distribution of the independent variable |
b) | Predict the mode of the dependent variable |
c) | Predict the mean of each conditional distribution of the independent variable |
d) | Predict the mean of the dependent variable |
e) | Predict the median of the dependent variable |
Question 16 (1 point)
The value obtained by dividing the amount of change in the dependent variable by the amount of change in the independent variable corresponds to the ________ term in the general formula Y' = a + bX.
a) | "b" |
b) | "a" |
c) | "bX" |
d) | "Y'" |
e) | "X" |
Question 17 (1 point)
In regression analysis, Pearson's r is ________.
a) | the coefficient of determination |
b) | equivalent to b in the equation Y = a + bX |
c) | the standard deviation |
d) | equivalent to a in the equation Y = a + bX |
e) | the correlation coefficient |
Question 18 (1 point)
In a study of ETHNICITY (independent variable) and LIFE SATISFACTION (dependent variable), 10 prediction errors are made when we do not have any information about the independent variable, and 5 prediction errors are made when we know the independent variable and its relationship to the dependent variable; these results give us a PRE value of ________.
a) | 50 |
b) | 5 |
c) | 0.5 |
d) | 1 |
e) | 15 |
Question 19 (1 point)
Relationships are associations.
Question 19 options:
A) True | |
B) False |
Question 20 (1 point)
If a percentaged PRE value is 100%, this indicates a(n) ________.
a) | moderately strong relationship between the independent and dependent variables |
b) | perfectly strong relationship between the independent and dependent variables |
c) | undefined result |
d) | calculation error |
e) | absence of any relationship between the independent and dependent variables |
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