Data reduction It's poetic 16.621 March 18.2003
Data Reduction “It’s Poetic” 16.621 March 18, 2003
Introduction A primary goal of your efforts in this course w be to gather empirical data so as to prove(or disprove) your hypothesis Typically the data that you gather will not directly satisfy this goal Rather, it will be necessary to reduce the data, to put it into an appropriate form, so that you can draw valid conclusions In our discussion today we will examine some typical methods for processing empirical data Caution-garbage in/garbage out still applies
Introduction • A primary goal of your efforts in this course will be to gather empirical data so as to prove (or disprove) your hypothesis • Typically the data that you gather will not directly satisfy this goal • Rather, it will be necessary to “reduce” the data, to put it into an appropriate form, so that you can draw valid conclusions • In our discussion today we will examine some typical methods for processing empirical data • Caution-garbage in/garbage out still applies
Hiawatha designs an experiment Maurice. kendall From The american statistician Vol.13,No.5,1959,pp23-24 Verses 1 through 6
Hiawatha Designs an Experiment by Maurice G. Kendall From The American Statistician Vol. 13, No. 5, 1959, pp 23-24 Verses 1 through 6
Deyst's 1662X Project I have performed a very simple experiment The hypothesis was: my driving route distance, from West Garage to my driveway in arlington, is eight miles On a number of trips i recorded the mileage as indicated by the odometer of my automobile I now wish to reduce the data and draw some conclusions
Deyst’s 16.62X Project • I have performed a very simple experiment • The hypothesis was: my driving route distance, from West Garage to my driveway in Arlington, is eight miles • On a number of trips I recorded the mileage, as indicated by the odometer of my automobile • I now wish to reduce the data and draw some conclusions
Experimental Project(cont My experimental procedure was: at the exit from West Garage I zeroed my trip odometer and when i reached my driveway at home i recorded the odometer reading On each of ten trips i took the same route home
Experimental Project (cont.) • My experimental procedure was: at the exit from West Garage I zeroed my trip odometer and when I reached my driveway at home I recorded the odometer reading • On each of ten trips I took the same route home