This is a value, usually a numerical value, that describes a population.
What is a parameter?
100
This drawing is an example of this kind of distribution.
What is a positively skewed distribution?
100
This symbol is used to denote a population mean.
What is mu?
100
This is the symbol for a population standard deviation.
What is sigma?
100
The following is an example of this kind of scale: Temperature in degrees Fahrenheit
What is interval scale?
200
This is a value, typical numerical, that describes a sample.
What is a statistic?
200
Find the corresponding percentile rank for X = 82 by interpolating from the cumulative frequency table.
What is the 52nd percentile?
200
The score that divides a distribution exactly
in half, so that 50% of scores in that distribution
are at or below that score.
What is the median?
200
For a population, you calculate this value by dividing SS by N.
What is variance or standard deviation?
200
How do you tell if a score is extreme using the median?
The value of the score is at least twice the value of the semi-interquartile range above or below the median.
300
These are statistical techniques used to organize, summarize, and simplify data
What are descriptive statistics?
300
This type of graph depicts interval or ratio data and the bars for each frequency touch.
What is a histogram?
300
These are the instances in which you should calculate the median instead of the mean for a distribution.
What is when the distribution is skewed, there are open-ended/undetermined values, or the data is ordinal.
300
How do you determine if a score is extreme using the mean?
The value of the score is two or more standard deviations above or below the mean.
300
This is the symbol for a sample standard deviation.
What is s or SD?
400
This is the only form of research that can determine causation between variables.
What is experimental research?
400
This kind of graph displays nominal or ordinal data and the bars DO NOT TOUCH.
What is a bar graph?
400
This is the symbol used to denote the size of a population.
What is N?
400
This is a quantitative measure of how spread out (fat) or clustered together (skinny) the scores in a distribution are.
What is variability?
400
This is the symbol for a sample mean.
What is M?
500
The distance you travel from home to school is an example of this kind of variable (continuous/discrete).
What is a continuous variable?
500
Find the modal score from this stem-and-leaf plot.
What is 32?
500
This is a statistical measure to find the single score that describes the center of a distribution with the most representative value.
What is a measure of central tendency?
500
You receive a test back with the following information. The mean in your class was M = 75. Your score was X = 83. Would you rather the standard deviation of scores in your class be SD = 5 or SD = 10? Why?
SD = 5 because you will have scored higher than one standard deviation above the average score.
500
This is the symbol for the variance of a population.