Variables
The gender of the instructor is this type of variable. (Hint: measured/manipulated and categorical/continuous)
What is measured categorical?
In Figure B, this describes the comparison between the ranges of the two histograms.
What is the same?
This is the type of graph shown in Figure F.
What is a histogram?
Is there a relationship between Teacher Empathy and Course Grade? What number tells you that?
There is a relationship because p = .014.
What is the lower level of the confidence interval for the relationship between Teacher Empathy and Perceived Learning?
.44
Perceived learning is this type of variable. (Hint: measured/manipulated and categorical/continuous)
What is measured continuous?
In Figure B, this group has a larger mode.
What is the group that is marginalized?
Figure E shows 2 measures of central tendency. This one is larger.
What is the median?
There is no relationship between Perceived Learning and Course Grade
Is the relationship between Teacher Empathy and Rigor as Cognitive Complexity statistically significant? How can you tell?
Yes.
Because there are asterisks after r = .57.
Because the 95% confidence interval [.49, .65] does not include 0.
Teacher empathy is this type of variable. (Hint: measured/manipulated and categorical/continuous)
What is measured continuous?
In Figure B, this group probably has a larger standard deviation than the other group.
What is the marginalized group?
This is the term for the three round dots towards the bottom of Figure E.
What is an outlier?
How many degrees are freedom are there for the test of the relationship between Teacher Empathy and Perceived Learning?
284
The 95% confidence interval for the relationship between Rigor as Difficulty and Teacher Empathy is [-.12, .11]. What does this tell you?
The relationship is not statistically significant.
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.
True or False: In both histograms, 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.
This is shown by the square black dot inside the rectangle in Figure E.
What is the mean?
How strong is the relationship between Teacher Empathy and Perceived Learning in the sample?
strong
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.
Figure C is this type of graph.
What is a box plot?
Which measure of central tendency is not shown in Figure E?
What is the mode?
Is the relationship between Perceived Learning and Course Grade statistically significant? What number tells you this?
Yes because p = .046
This is the number of variables listed that were manipulated.
What is zero?
This is shown by the horizontal lines in the middle of the rectangle in Figure C.
What is the median?
Which measure of dispersion is not shown in Figure E?
What is the standard deviation?
In Figure C, this is the shape of the distribution of scores for non-marginalized students.
What is negatively skewed?
This is the shape of the distribution in Figure G.
What is symmetrical?
This is the percentage of scores in the top part of the box in the box-and-whisker plot.
What is 25%
This goes from 1 to 155 in Figure D.
What is the number of participants in the categories?
Note: 1 to 155 is not the range. Instructor gender is a categorical variable with three levels (other, man, woman). You can't describe a range for a categorical variable.
This is the mode in Figure D.
What is Man?