Psychology 1000 Lecture 3: PSYCH1000, lecture 3

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: All

Document Summary

Topics of the day: distributions, central tendency, variability. North america: % of households with 1 or more tvs: 99, average number of tvs per house: 2. 24, average daily viewing: 6 hr 47 min, % who watch while eating dinner: 66, netflix subscribers: 81 million (worldwide) Tuesday, october 18th, 2016: simplify with a few numbers (statistics, mean (x); m. Add up numbers and divide by n (the number of students: median (mdn) Easy to identify from frequency distribution: note: x= mdn = mode, these 3 numbers tell us the shape, overall dispersion of scores tell us the shape, how do they cluster around the mean, range: Same value can be obtained with a variety of scores (84-10=74 or 94-20 = 74: variance: Degree of fluctuation of scores around the mean. Some distributions have high variance, others are relatively low. Z- scores are normally distributed with a mean of 0 and s= 1: normal distribution.