Chapter 6 Notes, Probability
Musial, Winter, 2016
Probability: is the frequency of times an outcome occurs divided by the total of possible
outcomes. The symbol is p. Probability is used to predict wh
The distinction between experimental and quasi-experimental research (Musial)
Quasi-experimental designs are experiments that have treatments, outcome measures and
experimental units, but do not use r
Chapter 7 Notes Musial (Winter, 2016)
The Distribution of Sample Means
Review:
While working with z scores and probability, we assumed that a single score (n= 1) was used.
We either used a single raw
Chapter 9: Introduction to the t Statistic (an alternative to z)
Review:
Musial, Winter, 2016
z= Xu
Paradox: We have learned how to compute a z-test. However, in the behavioral sciences, it
is rare fo
Chapter 8: Hypothesis Testing Winter, 2016 (Musial)
Hypothesis Test: Statistical Method that uses sample data to evaluate a hypothesis about a
population.
A Hypothesis Illustration:
We state a hypoth
Chapter 5 Notes: z-scores (Musial) Winter, 2016
Characteristics of the Normal Distribution:
1) The normal distribution is mathematically defined. The shape of the distribution is
specified by an equat
Chapter 4 Variability Notes Dr. Musial
Winter, 2016
Variability is a measure of spread of scores in a distribution. It ranges from zero to infinity.
X
8
8
8
8 No Variabilityall scores are the same
X
8
Chapter 1 Notes (Musial)
Descriptive Statistics: Procedures used to describe or summarize numeric observations,
referred to as data (plural). For example, we could describe the area of psychological
c
Chapter 3: CENTRAL TENDENCY
Dr. Musial
Review:
is sigma. X is pronounced sum of X.
The X for scores cfw_5, 6, 9 is = to 5 + 6 + 9 = 20, so the X = 20.
N= population and n= sample
Central tendency are