Section 2.2: Organizing Quantitative Data: The Population Displays
445,045/4,310,802 = 0.1032 and so on. Age Relative Frequency
Magnitude Relative Frequency 0-0.9 1.0-1.9
0.0014 0.0014
2.0-2.9
0.2086
15-19 20-24
0.1032 0.2512
3.0-3.9
0.2172
25-29
0.2803
4.0-4.9 5.0-5.9
0.4743 0.0932
30-34 35-39
0.2232 0.1160
6.0-6.9
0.0085
40-44
0.0244
7.0-7.9
0.0012
45-49
0.0017
8.0-8.9
0.0001
(b) (b) (c) (c)
The relative frequency is 0.0244, so 2.44% of live births were to women 40-44 years of age. 0.1032 + 0.2512 = 0.3544 so 35.44% of live births were to women 24 years of age or younger.
7, 276 ⋅100% = 47.15% of earthquakes 15, 432 registered 4.0-4.9 in magnitude, and 22+22+3201+3332+7276 ⋅100% 15, 432 13, 853 = ⋅100% = 89.77% 15, 432 of earthquakes in 2007 registered 4.9 or less in magnitude.
28. (a) Total frequency: 17 + 18 + 7 + 5 + 0 + 1 = 48 Relative frequency for 0-4999 is 17/45 = 0.3542 and so on.
27. (a) Total births = 445,045+ 1,082,837+ 1,208,405+ 962,179+ 499,816+ 105,071+ 7,349 = 4,310,802 Relative frequency for 15-19 =
43