AP PSYCH HAWKS CH 2 - DESCRIPTIVE METHODS & CORRELATION 1

The best situation in which to choose correlation research is if you wish to

• determine if there is a predictive relationship between 2 factors/variables

• describe behavior in narrative form (e.g. journals like Jane Goodall)

Researchers often use this type of graphic to illustrate correlation study data

• pie chart

• line graph

• scatterplot

• frequency polygon

The strongest possible correlation relationship between 2 variables would be expressed as

• r = .99

• 100%

• always +1.0

• either -1.0 or +1.0

On a scatterplot, typically a line is drawn with an equal amount of data points above & below the line to show the trend. This line is referred to as the

• continental divide

• common denominator

• line of best fit

• line demarcation

The numerical statistic used in correlation research is referred to as a(n)

• derivative

• rational number

• coefficient

• standard deviation

The weakest correlation below would be:

• r = - .97

• r = - .55

• r = .25

• r = -.22

The strongest correlation indicated below is:

• r = -.87

• r = .75

• r = -.67

• r = .80

The scatterplot shown here illustrates a(n)

• negative correlation

• no correlation

• positive correlation

• perfect correlation

The strength of the correlation represented in this scatterplot would best be describe as:

• moderate

• very strong

• very weak

• no correlation

The scatterplot pictured here illustrates a(n)

• no correlation

• null hypothesis

• positive correlation

• negative correlation