Determine the angle 8 between pipe segments BA and BC.
STA3032 MODULE 1 ARTICLE I. 1.1-1.3.5 1) 1.1 Descriptive Statistics a) Population parameters- “a numerical summary concerning the complete collection of subjects” i) Notated by Greek characters b) Sample statistics- “a numerical summary concerning a subset of the population, from which we try to draw inference about the population parameter” i) Notated by the hat symbol over a population parameter c) i.e. σσstandard deviation 2) 1.2 Summary Statistics 3) 1.2.1 Location a) Mode: most frequent number b) Mean: average of the observations c) p percentile: p% of data are less than that specific value and 100%-p% are greater i) position of p percentile value: (p/100)(n+1) (1) i.e. value x was in the 90 percentile which means that 90% of all valuethwere less than value x d) Median: 50 percentile e) Trimmed Mean: a% trimmed mean means that a% multiplied by your total numerical values= some value that is equal to how many values you “trim” from the lower and upper side of your data (assuming your data is ordered smallest to largest). With the remaining values you recalculate the new average. i) i.e. if you have 10 values, ordered, and you want to calculate the 10% trimmed mean. 10%=0.1 so 0.1 x 10 (your total number of values) =1. Therefore, you would trim off one value from the lower side and one value from the upper side. With these 8 remaining values you would recalculate the mean and that is your “trimmed mean”.