Variables
Figures B to D
Figures E to G
Identifications
Table H Questions
Table I Questions
100

The gender of the instructor is this type of variable. (Hint: measured/manipulated and categorical/continuous)

What is measured categorical?

100

In Figure B, this describes the comparison between the ranges of the two histograms.

What is the same?

100

This is the term for the three round dots towards the bottom of Figure E.

What is an outlier?

100

This is shown by the horizontal lines in the middle of the rectangles in Figure C.

What is the median?

100

Is there a relationship between Teacher Empathy and Course Grade? What number tells you that?

There is a relationship because p = .014.

100

What is the lower level of the confidence interval for the relationship between Teacher Empathy and Perceived Learning?

.44

200

Perceived learning is this type of variable. (Hint: measured/manipulated and categorical/continuous)

What is measured continuous?

200

In Figure B, this group has a larger mode.

What is the group that is marginalized?

200

Figure E shows 2 measures of central tendency. This one is larger.

What is the median?

200

Figure C is this type of graph.

What is a box plot?

200
What is the null hypothesis for the relationship between Perceived Learning and Course Grade?

There is no relationship between Perceived Learning and Course Grade

200

What is the upper level of the 95% confidence interval for the relationship between Rigor as Cognitive Complexity and Perceived Learning?

.69

300

Based on Table A, participants rated the course as more rigorous when defining rigor in terms of this (cognitive complexity or difficulty).

What is cognitive complexity?


Note: The mean for cognitive complexity is higher than the mean for difficulty. 

300

In Figure B, this group probably has a larger standard deviation than the other group.

What is the marginalized group?

300

This is shown by the square black dot inside the rectangle in Figure E.

What is the mean?

300

This is the percentage of scores in the top part of the box in the box-and-whisker plot.

What is 25%

300

How many degrees are freedom are there for the test of the relationship between Teacher Empathy and Perceived Learning?

284

300

Is the relationship between Teacher Empathy and Rigor as Cognitive Complexity statistically significant? How can you tell?

Yes.

Because the 95% confidence interval [.49, .65] does not include 0.

400

Based on Table A, participants' ratings of rigor were more spread out when defining rigor in terms of this (cognitive complexity or difficulty).

What is cognitive complexity?


Note: The standard deviation for cognitive complexity is larger than the standard deviation for difficulty.

400

True or False: In both histograms in Figure B, the mean is larger than the median.

What is false?

Note: The mean will be pulled in the direction of the tail. Because the tails of the distributions are on the left. The few low scores will affect the mean more than the median making the mean smaller.

400

This is the shape of the distribution in Figure G.

What is symmetrical?

400

Which measure of dispersion is not shown in a boxplot?

What is the standard deviation?

400

How strong is the relationship between Teacher Empathy and Perceived Learning in the sample?

strong

400

Can you conclude that there is a relationship between Rigor as Difficulty and Teacher Empathy in the population? Why or why not?

No because the confidence interval [-.12, .11] includes 0.
500

This is the number of variables listed that were manipulated.

What is zero?

500

In Figure C, this is the shape of the distribution of scores for non-marginalized students.

What is negatively skewed?

500

Which measure of central tendency is not shown in Figure E?

What is the mode?

500

This type of figure has a variable rather than frequencies (or counts) on the y-axis (vertical axis), as well as a variable on the x-axis.

What is a scatterplot?

500

Is the relationship between Perceived Learning and Course Grade statistically significant? What number tells you this?

Yes because p = .046

500

How strong is the relationship between the two measures of rigor in the population?

Plausibly between weak and moderate.

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