Probability:
Basic
Basic
Calculating the total number of orderings of a set or subset.
What is Permutation?
The addition or subtraction of a constant, c, to each score in a set affect the mean/variance/standard deviation of the set?
What is Data Transformation?
A statistical tool examining the bivariate relationship between two variables
What is Correlation?
Factors affecting correlations
What are Outliers?
Two events that cannot occur during the same time
What are mutually exclusive events?
Calculating the total number of subsets of a certain size, disregarding the order of the items in the subsets
What is combination?
An example of a data transformation that uses both division and subtraction.
What is Standard Score?
Correlation coefficient of quiz scores and final exam scores (hint: (product-moment correlation coefficient)
What is Pearson’s r ?
A graph of the raw data with the values of one variable on the x-axis, and the other on the y-axis.
What is a Scatterplot?
The likelihood of either event A or event B or both occurring
What is Disjunctive Probability?
The number of successes in a sequence of n independent trials
What is discrete probability distribution?
Mean of z scores is always = 0
What is the z score of a standard score?
Name the Correlation Coefficient: Student’s class ranking on quiz and class ranking on final exam.
What is Spearman’s rho (rs)? (Both variables are measured at the ordinal scale (ranks))
For a large sample, you can tally your values in this table.
What is a Bivariate Frequency Table?
Calculating the total number of orderings of a set or subset
What is Permutation?
The normal distribution can be used to approximate probabilities on the binomial distribution (when n is large).
What is Normal Approximation?
Standard deviation of z scores is always = 1
What is the a standard scores standard deviation?
Name the Correlation Coefficient: Gender and handedness
What is Phi coefficient (related to c2)? (Both variables are dichotomous - only two levels/caregories)
One variable (X) influences (or predicts) the other variable (Y).
What is Regression?
Applied when considering the area under the curve from this approximation.
What is continuity correction?
Allow us to compare relative placement of scores
What is a Standard Score?
Name the Correlation Coefficient: IQ and gender
What is Point-biserial correlation? (One continuous variable and one dichotomous variable)
1) Form (linear or nonlinear) 2) Direction (positive or negative) 3) Strength (no, weak, or strong)
What are the three things to interpret a scatterplot?