CSB345H1 Study Guide - Statistical Inference, Squared Deviations From The Mean, Descriptive Statistics

64 views4 pages

Document Summary

L e c t u r e 1 : h o w t o s u m m a r i z e d a t a ( c h a p t e r 2 ) Levels of data measurement: what level/type of data measurement" is number of cigarettes smoked", continuous no breaks bw two numbers (decimals & fractions are infinite bw them, discrete whole numbers, ex. Descriptive statistics: descriptive statistics is used to turn a set of data (ex. of random numbers) into something more meaningful types of descriptive statistics. 50% of the values are less than it & 50% are greater: mode: the most frequently occurring value(s) in a set of data. Hmb325h lisa zhao 2013 | page 2: measures of variability dispersion/spread" of the data. Normal & skewed distributions: normal distribution/bell-shaped curve/gaussian curves are defined by the mean & standard deviation (sd)