Question : 71.Which of the following ranges represent the possible values of : 1245305

71.Which of the following ranges represent the possible values of a correlation between two variables?

a.
-1.00 to +1.00
c.
0 to +1.00

b.
-1.00 to 0
d.
-100 to 100

72.Steve wants to know what the correlation is between the number of treats he gives his dog, Blue, and the speed at which she will follow his instructions to sit down. He finds that the more treats he gives Blue, the faster she sits down on command. Which of the following options describes the correlation that could describe this relationship?

a.
0.00
c.
-.73

b.
0.82
d.
+1.92

73.The direction of a relationship between two variables is indicated by the ________ of the correlation coefficient.

a.
number
c.
sign

b.
mode
d.
median

74.The strength of a relationship between two variables is indicated by the ________ of the correlation coefficient.

a.
number
c.
sign

b.
mode
d.
median

75.Which of the following correlation coefficients indicates the strongest relationship between two variables?

a.
-0.81
c.
+1.22

b.
+0.66
d.
-3.21

76.Professor Eli conducts a correlational study in which he concludes that the amount of sunlight children receive is positively correlated with the rate at which they grow. Which of the following conclusions would Professor Eli be incorrect in drawing from his correlational data?

a.
Getting more sun causes children to grow faster.

b.
The more sun children get the faster they seem to grow.

c.
The faster children grow, the more sun they seem to get.

d.
The less sun children get, the slower their rate of growth seems to be.

77.Which of the following is the primary limitation of using correlational research methods?

a.
They are most susceptible to the double-blind error effect.

b.
They only use one research participant, which limits their generalizability.

c.
They make it impossible to operationalize variables.

d.
They do not allow for conclusions about cause-and-effect relationships.

78.If Hamid wants to do one study to determine whether or not playing violent video games causes children to act more aggressively, he would be best served by doing a(n)

a.
experiment.
c.
longitudinal study.

b.
correlational study.
d.
cross-sectional study.

79.Cosella is conducting an experiment where she assesses how quickly teenagers can run a 100-meter race after consuming specific amounts of caffeine. She divides her sample up into three groups. Group 1 receives a glass of water (zero caffeine). Group 2 receives the equivalent of the caffeine in one cup of coffee. Group 3 receives the equivalent of two cups of coffee. Each participant is then timed as they run the course. In this study, the independent variable is

a.
the previous running experience of each participant.

b.
the teenagers who are being studied.

c.
the time it takes to run the 100-meter race.

d.
the amount of caffeine being ingested.

80.Cosella is conducting an experiment where she assesses how quickly teenagers can run a 100-meter race after consuming specific amounts of caffeine. She divides her sample up into three groups. Group 1 receives a glass of water (zero caffeine). Group 2 receives the equivalent of the caffeine in one cup of coffee. Group 3 receives the equivalent of two cups of coffee. Each participant is then timed as they run the course. In this study, the dependent variable is

a.
the previous running experience of each participant.

b.
the teenagers who are being studied.

c.
the time it takes to run the 100-meter race.

d.
the amount of caffeine being ingested.

 

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