Sampling
Scales of Measurement-
NOIR
NOIR
Measures of Central Tendency
Methods of Dispersion
Biostats and Beyond
100
Selecting every 3rd person on a list
What is systematic sampling?
100
No rank in order, such as the number on Tom Brady's jersey
What is nominal
100
The average of scores.
What is the mean?
100
Most commonly used measure of dispersion.
What is standard deviation?
100
The test used when comparing the statistical difference between 3 or more mean scores
What is ANOVA?
200
Each subject has an equal chance for selection
What is random sampling?
200
Most dental indices (ex. DMFT) are treated as this type of data
What is ratio
200
Most frequently occurring score and a board favorite
What is Mode?
200
Difference between the highest and lowest score of a data set
What is range?
200
The relationship or association between two variables.
What is correlation?
300
The RDH chose her favorite patients for the study.
What is convenience sampling?
300
Ranking this game from excellent to poor
What is ordinal?
300
When plotted on a bell curve, these measures of central tendency are equal.
What is mean, median, and mode?
300
The percentage of scores that fall between -1 and +1 standard deviation.
What is 68%.
300
A perfect positive correlation
What is +1?
400
Has the greatest chance of bias.
What is judgement sampling?
400
Units around an arbitrary zero (zero means something) such as -0 degrees Fahrenheit
What is interval?
400
When more scores fall in the higher range
What is a negative skew?
400
+1 standard deviation when the mode is 84 and the standard deviation is 2.
What is 86?
400
As one variable goes up, the other goes dowN
What is a negative correlation?
500
Placing in subgroups and randomly select from each group
What is stratified sampling?
500
These measurements make up the word NOIR.
What are Nominal, Ordinal, Interval, and Ratio?
500
The mode when the mean for the data on a normal curve is 10.
What is 10?
500
The midpoint of scores.
What is median?
500
Less than a 5% risk that a statistical finding of a “difference” is due to chance
What is p<.05?