Central Tendency
This measure of central tendency is also referred to as a balance point.
What is mean?
This letter of the alphabet represents scores for a particular variable.
What is X?
There are two types of graphs that are used for ratio and interval data.
What are histograms and polygons?
This scale consists of a set of categories that have different names. It does not allow for quantitative distinctions to be made.
What is nominal?
This letter of the alphabet represents the mean for a sample.
What is M?
On an ordinal scale, this central tendency measurement is always appropriate and usually preferred.
What is median?
This letter of the alphabet is used to identify the number of scores in a Population.
What is N?
A student ranks at the 63 percentile of their class. What does this indicate?
What is 63 or lower?
This scale has an arbitrary zero point. The zero does not indicate a total absence of the variable measured.
What is interval?
You do this when trying to find the median when you have an even amount of sample scores.
What is take the middle numbers, combine them, and divide by 2?
This measurement of central tendency is computed by taking the sum of scores and dividing it by the number of scores.
What is mean?
This Greek Letter is used to stand for summation.
What is Sigma (Σ)?
There are two types of skewed distributions. Draw them.
What is a easy method Dr. M has offered to identify one of these skews?
What are positive and negative skew?
Turn it sidewise, if it looks like a p, it is positive.
This scale consists of a set of categories organized in a sequence. It does not allow you to determine the size of the difference.
What is ordinal?
This is when you are combining two sets of scores to find the overall mean for the combined group.
What is weighted mean?
!DAILY DOUBLE!
This is when a distribution has two modes.
This is when it has more than two.
What is multimodal?
This Greek Letter is used to identify the Mean for a population.
What is mew (μ)?
This graph is used for nominal or ordinal data.
What is a bar graph?
Why do the bars not touch on this graph?
There are two types of variables discussed in this course. Name them both.
What are discrete and continuous?
This central tendency measurement is used for data on a nominal scale.
What is mode?
If a test subject fails to record a score, it will throw off a distribution and make it impossible to compute the mean. This measure of central tendency may be used instead.
What is median?
This letter of the alphabet represents proportion
What is lower case p (p)?
The intervals of a grouped frequency distribution table are called this.
What is class interval?
This scale has a meaningful zero point and represents the complete absence of the variable measured.
What is ratio scale?
When there are a number of extreme scores in a distribution, it may be necessary to use these two measures of central tendency instead.
What is median and mode?