the difference between the sample population’s average and the average of the population
What is sampling error?
100
1)hard to do in a clinical setting, especially finding a homogenous group that is large enough 2)hard to find a control group, 3)ethical concerns 4)expensive
What are limitations of SSDs?
100
numbers used to describe a data set
What is a statistic?
100
1) variables are distributed normally 2)elements in subsets are independent 3) variance of subset populations are the same = homogeneity of variance 4) samples are random 5) elements in subsets are independent
What are the assumptions of ANOVA?
100
using ordinal numbers to describe a linear relationship, not a causative relationship
What is correlation
200
the group of people available to you
What is the accessible population?
200
gathering data for a bare minimum of 3-5 days, or as long as it takes, to establish a trend
What is a stable baseline?
200
interested in using the data set (which is the sample) to say something about the larger group from which it came from (the population)
What is inferential statistics?
200
1) numerator (#groups -1 or k-1)
2) denominator (#subjects - # of groups or n-k)
What are Degrees of Freedom for ANOVA
200
Pearson (interval or ratio data), point biserial, phi, spearman (ordinal data)
What are ways to measure correlation
300
One main group of sampling where everyone in the accessible population has an equal chance of being chosen, therefore the sample population can be considered representative of the accessible population
What is probability sampling?
300
an interactive design that allows for examination of the joint effect of 2 or more treatments, and combined & separate effects
What is A-B-BC?
300
we use this to express scores in terms of standard deviation units, and hence are using standardized scores
What is a z score
300
dividing your alpha level by the number of comparisons you are looking at
What is Bonferroni's correction?
300
you use this when you want to establish a relationship as a basis for prediction
What is regression?
400
simple random samples, systematic sampling, stratified random samples, proportional & disproportional samples, & cluster samples
What is probability sampling?
400
This type of design can be easily used to show a prosthetic or a therapeutic effect.
What is A-B-A design?
400
as the size of the sample increases, the mean of the sample will more closely approximate the mean of the population
What is the central limits theorem
400
when you get this you don't go back and look at the main effects
What is a significant F value for interaction
400
known as distribution free tests, do not assume data comes from normal distribution, do not assume variances are the same in different groups, uses nominal or ordinal data