ECON 2613 Study Guide - Final Guide: Billy Bishop, Reverse Engineering, Neurology

• School: Acadia University
• Department: Economics
• Course: ECON 2613
• Professor: Wang Xiao Ting

Document Summary

Steps to make a histogram: sort data into ascending order (smallest to biggest) 2)find the range of the data: choose how many bins you want in your histogram. 4)divide the range by the number of bins this gives you the width of your bins. 5)set the limits of the bins and use the countif function to find results. 6)divide the countif results by the total number of observations and multiply by 100 to get frequency : highlight %s and the bin lits, then put into graph. ****note: countif results should add up to the number of observations**** Central tendency how the data values group around a typical or central value. >geometric mean n+1/2 gives position of median most common value. >interquartile range --- q3-q1 (eliminates problems with range) >variance(average of squared deviations from the mean) --- s^2=(value*-mean)^2/n-1. >coefficient of variation (shows variation to mean, can compare two or more sets of data with diff. units) --- (stdev/mean)*100.