Confidence Intervals
Computer Day 2
Correlation
Computer Day 1
Misc.
100
What is the purpose of standard error?
It estimates the margin of error
100
How do you make an error bar in excel?
Make figure of your data, click add chart elements, click error bars, more error bar options, select custom and specify value
100
What is correlation?
It identifies a relationship, but does not imply causation.
100
How do you create a pivot table?
Select all data, insert, pivot table, hit ok, then drag the data you want to include to the respective sections.
100
What are common problems with surveys?
Self-selection, socially desirable responses
200
What is the margin of error?
It provides a range for estimating the unknown population mean based on your sample.
200
How do you find correlation in excel?
Click empty cell, click fx, then click correl, array 1 (x values) and array 2 (y values)
200
What are the possible directions for correlations?
Positive, Negative, No correlation
200
How do you calculate margin of error on excel?
Click empty cell, type =SD/√n
200
What is sampling?
Process of taking a smaller group of participants/scores from a larger population.
300
What is an unbiased sample?
A sample that represents the population as a whole.
300
What was the manipulation in the mental rotation experiment?
The angle
300
What are the advantages of correlational designs?
More practical and more ethical
300
What was the manipulation in the gender perception experiment?
What facial features are shown
300
In a positive correlation increases in x associate with "___________" in y
increases
400
What is the 68% confidence interval for this data (lower bound number)?
3.67
400
What were the dependent variables in the mental rotation experiment?
Reaction time and accuracy
400
What is the pearson correlation formula?
r=ΣZxZy/(n-1)
400
how do you make your top row freeze so that it still appears after scrolling down?
Click view, freeze panels, and then click freeze top row.
400
What was the class demo about that we did to show and demonstrate sampling distributions?
Wrote down how many pets we had and asked around the class and found the average.
500
What is the 95% confidence interval for this data (upper-bound number)?
5.56
500
How do you calculate a z-score?
empty cell, =(x-xbar)/SD
500
What is the Pearson correlation for this data?
r=-.28
500
How do you make a scatterplot?
Highlight the data you want to include, then click insert and then scatterplot.
500
What are the disadvantages of correlations?
correlation does not imply causation.
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