Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

PSY 121

Chapter 12 and Chapter 13

TermDefinition
effect size general term that refers to the strength of association between variables; a type of correlation (pearson r is one indicator) general guide: 0.15 = small effects, 0.30 = medium effects, 0.40 or above = large effects
standard deviation (SD) average deviation of scores from the mean. SD = small; scores are close to mean; SD = large; scores are far from the mean. Used with interval and ratio scales
68% rule fall within the +/- 1 deviation units from the mean
bar graph use a separate bar for each piece of information. Used with nominal or ordinal data. When drawing bar graph, the bars should not touch each other
polygon (line graph) uses a line to represent frequencies, useful with interval and ratio scale variables
pie chart divide a whole circle into sections that represent relative percentages. Useful with nominal scale data
scatterplot used to visualize the relationship between the variables (correlation coefficient of +/- 1.00 - positive and negative)
null hypothesis (Ho) population means equal, the observed difference is due to random error. Logic: to be able to reject the null hypothesis --> good thing. Ho = mean of the treatment group = the mean of control group
research hypothesis (H1 or Ha) aka alternate hypothesis. Population means are not equal. The IV had an effect on the DV. Logic: to fail to reject (to accept) the research hypothesis. H1 = mean of treatment group will not equal the mean of the control group
t-value in regions of rejection (ROR) reject Ho, significant result
t-value NOT in ROR fail to reject Ho, not significant
t test used for single experiment (one IV and two levels - 2 groups). Used to examine whether 2 groups are significantly different from each other
F test ANOVA. More general and common than the t-test. Used to determine if there is a significant difference between 3 or more groups OR to evaluate the results of factorial designs
Created by: senthis1
Popular Psychology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards