Kinesiology 2032A/B Lecture Notes - Lecture 12: Null Hypothesis, Kurtosis, Statistical Significance
6 Mar 2017
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Foundations of statistics: tools and techniques for describing, organizing, and interpreting information, a language of statements about how characteristics of data can be applied appropriately. 1. descriptive statistics: organize and describe characteristics of a collection of data. Statistics: used to describe the sample the data was collected from, ex. measures of central tendency (mean, median, mode), percentages. 2. inferential statistics: used to make inferences from the collected data to a phenomenon/population, typically used after data has been summarized e. g. inferring treatment effect from an intervention. Null: group means are equal, differences are due to chance alone. Research: group means are not equal, differences are due to iv. Distribution: normal distribution curve, basis for understanding the probability associated with any possible outcome, basis for determining the degree of confidence we have in stating that the outcome is true, ex. outcome didn"t just happen by chance. Usually, more than 30 people in population will follow a normal distribution curve.
