Save
or

or

taken

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.

focusNode
Didn't know it?
click below

Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
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

# Willard Ch 14

### Statistics

TermDefinition
correlation coefficient A number, ranging from -1.00 to +1.00, that measures the direction and strength of the relationship between two variables
positive correlation Relationship in which two variables proceed in the same direction: high X scores are associated with high Y scores, and vice-versa.
negative correlation Relationship in which two variables proceed in opposite directions: high X scores are associated with low Y scores, and vice-versa.
perfect correlation In a perfect correlation, many of the dots will be piled on top of each other and, when connected, will form a straight diagonal line.
coefficient of determination Proportion of variance that two variables share in common; proportion of the variance on one variable that is explained by the variance of the other.
coefficient of non-determination Proportion of variability that is not shared, common variance; proportion of the variance on one variable that is not explained by the variance of the other.
linear relationship described by a straight line in which there is a tendency for Y scores to move in only one direction in relation to the X scores.
regression analysis Statistical procedure used to predict the value of a score on one variable by knowing the value of the score on another variable.
slope tells us how much and in what direction the regression line slants.
y-intercept point where the regression line cuts across, or intercepts, the Y-axis.
regression equation An equation for the line of best fit, which is used to predict Y values from given X values.
restricting the range When a sample is used that limits the scores on one or both variables more so than would be found in the population.
outliers scores on either the X or Y variable that are extreme. Can have a dramatic effect on the magnitude of the correlation.
Scatterplot diagram of the relationship between two variables. Positive correlations ascend to the right. Negative correlations decend to the right. More scatter= weaker correlation.
Pearson correlation Used for examining linear relationships between variables measured on interval or ratio scales.
Created by: rowaggerm
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:

• SPACEBAR - flip the current card
• LEFT ARROW - move card to the Don't know pile
• RIGHT ARROW - move card to Know pile
• BACKSPACE - undo the previous action

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