Methods Part 4

A frequency distribution

• is a way to present data visually in a table
• depicts a correlation between two variables using a histiogram
• is the same thing as a scattergram
• typically lists the frequency of each score on the horizontal axix

Scores pile up at the low end of the scale in 

• a negatively skewed distribution
• a positively skewed distribution
• any skewed distribution
• a normal distribution

The marketing agent for a professional sports franchise conducts a survey asking people how much they support the construction of a new sports stadium. Almost everyone who takes part in the survey indicates they are strongly in favor of a new stadium; there are just a few respondents who think a new stadium would be a bad idea.  When the results from the survey are plotted in a histogram, the distribution will be 

• positively skewed
• symmetrical
• impossible to predict without more information
• negatively skewed

When scores are "bunched up"in the center of a distribution, the

• mean will be relatively low

• standard deviation will be relatively low

• correlation coefficiaent will be a negative number

• standard deviation will be relatively high

The symmetric, bell shaped curve that represents the pattern in which many human characteristics are dispersed in the population is known as

• scatter plot
• normal distribution
• frequency polygon
• histogram

A way of measurement that shows how much the scores depart from a mean?

• range
• reliability
• inferential statistics
• standard deviation

each time a study is repeated, the results are consistent.

• validity
• reliability
• sample

The condition that exists when the probability that the findings are not due to chance

• statistical significance
• experimenter bias
• confounding variables

The extent to which an instrument measure what it is supposed to measure.

• reliability
• validity
• standardized

Repetition of the methods used in a previous experiment to see whether the same methods will yield the same results.

• validity
• research
• replication