2) A D 1 #Vehicles (x) Frequency (f) fx fx 2 3 6. 4 2 7 14 28 5 3 9 27 81 4 6 24 96 5 4 20 100 Total 35 91 311 9 10 11 Variance 12 2.1882 Efx² - Efx)² 13 2 n- 1 14 15 16 17 St. Dev 18 1.4793 Efx² - Efx)² 19 20 n-1 Step 3 B D E G H 1 GPA (LL) GPA (UL) Frequency (f) |(x – x) (x- i)- |f(x – x)} fx 2 0.01 2 0.505 1.01 -1.94 3.77 7.54 3 1.01 12 1.505 18.06 -0.94 0.89 10.63 2.01 3 24 2.505 60.12 0.06 0.00 0.08 5 3.01 13 3.505 45.565 1.06 1.12 14.57 6 Total 51 8.02 124.755 -1.76 5.78 32.82

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