Consumer Behavior: Buying, Having, Being
13th EditionMichael R Solomon
449 solutions
HDEV5
6th EditionSpencer A. Rathus
380 solutions
Social Psychology
10th EditionElliot Aronson, Robin M. Akert, Samuel R. Sommers, Timothy D. Wilson
525 solutions
Myers' Psychology for AP
2nd EditionDavid G Myers
901 solutions
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Terms in this set (18)
A cross-sectional design is a study in which the researcher ______________.
Collects data at one point in time
The correlation of ________ means there is no relationship between two variables.
0
_________ or experimental research provides researchers a way to control many aspects of the situation
Laboratory
What type of validity refers to whether the changes in the dependent variable are due to the manipulation of the independent variable?
Internal Validity
When we say that something has the statistical ______________, it means that the differences observed between two groups are large enough that it is highly unlikely that those differences are merely due to chance.
Significance
Measure of dispersion describe how much the scores in a sample _______ from one another.
Differ
What is a random assignment?
The assignment of participants to research groups by chance.
A single number that tells you the overall characteristics of a set data is called?
A measure of central tendency
What is a drawback of using the mean as a measure of central tendency?
The mean is easily affected if the data contains a few extreme scores
Which of these major limitation of the case study method of research?
We may not be able to generalize to the larger population
___________ statistics are the mathematical method used to indicate whether data sufficiently support or confirm a research hypothesis
Inferential
An extraneous variable that has not been measured that accounts for the relationship between two other variables is known as
A third variable problem
What type of research design measures variables at a single point in time?
Cross sectional
A researcher is studying how trauma might affect a persons day-to-day functioning. What types of research might the designer choose to conduct this study?
Descriptive, correlational, and experimental
Why is a random assignment important in an experiment?
It reduces the likelihood of pre-existing differences between groups of participants
The purpose of inferential statistics is to ______________.
Determine whether a hypothesis has been supported
Meta-analysis is....?
A method by which researchers can combine results across a variety of different studies to establish the strength of an effect
Caddy was being interviewed for a research study. Her interview was quite attractive and she found herself answering questions to impress him. This is an example of __________ bias.
Research participant
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Verified questions
question
Refer to the Table. What is the conditional probability of “high income,” given “never”? $$ \begin{array}{|lcccc|} \hline \text { Viewing Frequency } & \text { High INCOME } & \text { Middle INCOME } & \text { Low INCOME } & \text { TOtals } \\ \hline \text { Regular } & 0.10 & 0.15 & 0.05 & 0.30 \\ \text { Occasional } & 0.10 & 0.20 & 0.10 & 0.40 \\ \text { Never } & 0.05 & 0.05 & 0.20 & 0.30 \\ \text { Totals } & 0.25 & 0.40 & 0.35 & 1.00 \\ \hline \end{array} $$
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question
The following regression was fitted by least squares to 32 annual observations on time-series data: $$ \log y_t=4.52-\underset{(0.28)}{0.62} \log x_{1 t}+\underset{(0.38)}{0.92} \log x_{2 t}+\underset{(0.21)}{0.61} \log x_{3 t} $$ $$ \begin{aligned} &+0.16 \log x_{4 t}+e_t \quad \bar{R}^2=0.683 \quad d=0.61 \\ &\text { (0.12) } \\ & \end{aligned} $$ where $y_t=$ quantity of U.S. wheat exported $x_{1 t}=$ price of U.S. wheat on world market $x_{2 t}=$ quantity of U.S. wheat harvested $x_{3 t}=$ measure of income in countries importing U.S. wheat $x_{4 t}=$ price of barley on world market The numbers below the coefficients are the coefficient standard errors. a. Interpret the estimated coefficient on $\log x_{1 t}$ in the context of the assumed model. b. Test at the $5 \%$ level the null hypothesis that, all else being equal, income in importing countries has no effect on U.S. wheat exports against the alternative that higher income leads to higher expected exports. (Ignore, for now, the Durbin-Watson $d$ statistic.) c. What null hypothesis can be tested by the $d$ statistic? Carry out this test for the present problem, using a $1 \%$ significance level. d. In view of your finding in part c, comment on your conclusion in part b. How might you proceed to test the null hypothesis of part b?
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algebra
*Use set* \ $$ A=\{ x|x \in N \ \text{and} \ x<9 \} $$ \ Write set $A$ in roster form
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question
Imagine that you are being interviewed for a job as a financial adviser for an investment firm. The interviewer says the company’s average clients with the most savings are over the age of $55$. However, this group includes the most conservative investors. Your job would be to encourage this group to invest in high-risk stocks, which would bring in more commissions but could possibly lead to major losses for the investors. Should you take the job?
Verified answer
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