Frequency Distributions
Either a table or a graph.
How can a frequency distribution be structured?
p(100)=f/N(100)
What is percentage?
The height of the bar corresponds to the frequency of the category.
What is a histogram?
One side of the distribution is a mirror image of the other
What is a symmetrical distribution?
Population of IQ scores.
What is an example of a normal distribution?
1. The set of categories that make up the original measurement scale.
2. A record of the frequency, or number of individuals in each category.
What are the elements of a frequency distribution?
40-49 contains scores from X=40 to X=49
What is a class interval?
When scores are measured on a nominal or ordinal scale.
What is a bar graph?
The scores tend to pile up toward one end of the scale and taper off gradually at the other end.
What is a skewed distribution?
p = f/N
What is proportion?