Probability - Study notes
Probability likelihood of obtaining a specific sample form a population
Formula: probability of x = number of outcomes / total number of possible outcomes
Random sampling - e
Hypothesis
A Type I error is rejecting a true null hypothesisthat is, saying that the treatment has an
effect when, in fact, it does not
A Type II error is the failure to reject a false null hypothesi
Z scores study notes
Z-scores are numbers that specify accurately where a particular score fits into a distribution:
- they specify how many SDs above or below the mean any particular score falls
- A
Wk 4 study variability
SS (sum of squares) the sum of squared deviation scores
Variance is the mean of squared deviations
SD (standard deviation) is the square root of the variance. It provides a meas
Biased vs Unbiased - study notes
Biased stats that on average is over or under estimate their corresponding population
parameters.
Unbiased stats that on average are equal to their corresponding popul
Wk 3 study notes - central tendency
Mean will be pulled and affected by the skewness
Mean, medium and mode = measure of central tendancy
Central Tendency (CT) uses mean to make inferences
Mean : M = s
Stats notes week 2 : frequency distributions
Polygon used for intervals and ratio
Histogram (bars are touching) used to display data from interval or ratio
Bar graph leaves a space btw adjacent bars a
Stats Ch 8 Tutorial
1. Which of the following accurately describes a hypothesis test?
a) a descriptive technique that allows researchers to describe a sample
b) a descriptive technique that allows res
Stats Tutorial Ch 7
Distribution of sample means characteristics:
- The larger your sample size (n) the less variable the distribution becomes
- The more samples you collect the more it will look like
Class 1
Common sense: can outperform statistics in several ways such as recognizing patterns(handwriting, human language,
etc.) than computer programs based on statistics.
In other cases, statistics c
Chapter 1: Introduction to Statistics
Chapter Outline
1.1 Statistics, Science, and Observation
Definitions of Statistics
1.2 Populations and Samples
What are They?
Variables and Data
Parameters and St
Mental Illness
Sean Coleman MSW RSW
Mental Health Disabilities Counsellor/Educator
Defining Mental Illness
Deviation from social norms or from
normal behaviour
Personal Distress
Disability or Dysfunct