Unit 1
Unit 2
Unit 3
Unit 4
100
Is height typically nominal or quantitative?
quantitative
100
What is it called when someone lies or gives an incorrect response?
Response error
100
What is one better measure of variability to use than range?
Standard Deviation or Variance
100
When is r significant?
At least 95% confident
200
Is the set of numbers unimodal or bimodal ?
{ 1,1,2,2,2,2,3,3,4,4,4,4,4,5}
unimodal
200
What are the 3 most influential swing states?
Pennsylvania, Florida, and Ohio
200
What is the formula for standard deviation?
200
What is the r value of a perfect positive correlation coefficient ?
r=1
300
What operation does the symbol “Σ” represent and what is it called?
addition & sigma
300
What are the types of interviews?
focus group, telephone, & face to face interviews
300
What variables does the one-way ANOVA significance test use?
1 quantitative variable
1 nominal variable (2 or more levels)
300
r(26)= .386, p<.05
Is r significant?
Significant relationship
400
If the shape of the graph is skewed to the right what effect do the outliers have on the mean?
It increases
400
What are some democratic states?
New York, Oregon, California,
And Washington
400
What is the standard deviation of 7, 7 and 7?
0
400
What is the formula for explained variance?
(r²)✖100
500
What is the mean of these numbers?
{10,15,23}
16
500
What is the difference between a population parameter and a sample statistics?
A population parameter is number that describes the entire population and a sample statistic describes a small group
500
What do p < .05 and reject Ho both mean?
There is a relationship
500
What is the strength and direction of this scatterplot?
Moderate negative