Data Analysis and Ethics of Psychology

Describe the relationship between the variables.

• no correlation
• strong positive correlation
• strong negative correlation
• weak positive correlation

Describe the relationship between the variables.

• no correlation
• strong positive correlation
• strong negative correlation
• weak positive correlation

When everybody has an equal chance of being included in a study, this process is called

• unbiased reporting
• 
  survey
• random sample
• reliability

The ____ is a measure of the degree of variation among a set of scores from each other.

• mean
• scatterplot
• standard deviation
• normal distribution

Estimate the correlation coefficient

• r=-1
• r=1
• r=-0.5
• r=0.5

Students who do better in high school tend to do better in college.  This is an example of

• a.a negative correlation 
• a zero correlation
• a positive correlation 
• a perfect correlation

A correlation coefficient of 0 means that there is

• a strong negative relationship between 2 variables
• a strong positive relationship between 2 variables
• a perfect positive relationship between 2 variables
• no relationship between 2 variables

Which of the following is the measure of central tendency that would be most affected by a few extreme scores?

• A. mean 
• B. range
• C. median 
• D. mode 

The most frequently occurring number in a distribution.

• Mean
• Mode
• Median

The arithmetic average of a distribution, obtained by adding the scores and then dividing by the number of scores.

• Mean
• Mode
• Median