Example: How much do you like rainy days? 1-5 scale (5 being a lot)-scores are in the table. Calculate population variance and standard deviation. Compute SS using the definitional and computational methods. X X2 X-LL (X-LL)2 WNNUKU Central Tendency and Variability Activity Given the following sample of scores, calculate (a) mode, (b) median, (c) mean, (d) range, (e) sum of squares using the definitional formula, (f) sum of squares using the computational formula, (g) variance, and (h) standard deviation. Question: To what degree do you believe the Twins will finish with a winning record? 1 (not a chance) - 5 (definitely) Sample of 5 responses: 2,2,1,1,2