CMN 3102 Lecture Notes - Lecture 12: Statistical Hypothesis Testing, Central Tendency, Frequency Distribution

• School: University of Ottawa
• Department: Communication
• Course: CMN 3102
• Professor: Philippe Rousseau

Document Summary

Measures of variability and hypothesis testing part 1. Range: definition: represents the distance between the lowest and the highest score; calculated by subtracting the lowest score form the highest, ex: highest exam score: 96% and lowest 53% - the range would be. 43: range tells use the gap between the high and the low score, but does not provide an insight into how each score in the distribution differs from the mean or average scores. Sum of squares: definition: represents the amount and origins of individual differences ; Ultimately, the more individual scores in a dataset differ from one another, the greater the sum of squares will be. =_ : the formula is easy to compute once you understand what the various parts mean. The first symbol () stands for the sum of something, while the second () is the squaring of an individual number. So in this case, we square each value individually, then add them all.