PSYCH 1X03 Lecture Notes - Lecture 1: The Strongest
24 Jan 2018
School
Department
Course
Professor
Document Summary
Mean - the average value of a data set. Outliers can skew the accuracy of the mean. Outliers - extreme points, distant from others in a data set. Mode - the value that appears most frequently in the set. Median - the centre value in a data set when the set is arranged numerically. Measures of variability tell us how "spread out" our data is. Some variability in results is simply due to chance. Inferential statistics - statistics that allows us to use results from samples to make inferences about overall, underlying populations. Scores without any manipulation follow a symmetrical distribution. Results not significant if p-value is greater than 5% (greater than 5% probability of. Results significant if p-value is less than 5% (less than 5% probability of obtaining the. Setting criterion for a "statistically significant" difference between groups obtaining the data by chance data by chance.
