SOCL 2211 Lecture 1: SOCL 10:25
Document Summary
Mode for nominal variables: most common types of thanksgiving desserts. Mean for normally distributed variables and for inferential statistics: normal distribution. Way to describe the spread and difference between individual responses. Range= distance between lowest value and highest value. Outlier= one score that is drastically higher or lower than all others. Quartiles = score at which the range is divided into fourths (ex, 25%,50%(median) and. Interquartile range= range between the first quartile and the fourth. Ex: distance from the 25% to the 75% of the range. Other measures of variation less prone to outliers. Variance and standard deviation: variance measures variability based on the average squared deviation of each case from the mean variance = o2=e (score-mean)/n, standard deviation is the square root of the variance. o=square root of n. Normal distribution = symmetric distribution of scores around the mean.
