# QNT 273 Week 3 Individual Assignment Textbook Assignments

)      Stories in the Tallest Buildings The number of stories in the 13 tallest buildings for two different cities is listed below. Which set of data is more variable?

Houston: 75, 71, 64, 56, 53, 55, 47, 55, 52, 50, 50, 50, 47

Pittsburgh: 64, 54, 40, 32, 46, 44, 42, 41, 40, 40, 34, 32, 30

Source: World Almanac.

Houston: (75+71+64+56+53+55+47+55+52+50+50+50+47)/13 = 55.76932.

Pittsburgh: (64+54+40+32+46+44+42+41+40+40+34+32+30)/13 = 41.4615

Houston = [ (75 - 55.7692)2 + (71 - 55.7692)2 + (64 - 55.7692)2 + (56 - 55.7692)2 +

(53 - 55.7692)2 + (55 - 55.7692)2 + (47 - 55.7692)2 + (55 - 55.7692)2 + (52 - 55.7692)2 +

(50 - 55.7692)2 + (50 - 55.7692)2 +(50 - 55.7692)2 + (47 - 55.7692)2 ] / 12 = 78.8590

Pittsburgh = [ (64 - 41.4615)2 + (54 - 41.4615)2 + (40 - 41.4615)2 + (32 - 41.4615)2 +
(46 - 41.4615)2 + (44 - 41.4615)2 + (42 - 41.4615)2 + (41 - 41.4615)2 + (40 - 41.4615)2 +

(40 - 41.4615)2 + (34 - 41.4615)2 + (32 - 41.4615)2 + (30 - 41.4615)2 ] / 12 = 88.7692