Assignment #1

Assignment #1 - Assignment#1 MAT H 203 2.29 a Calculations...

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Unformatted text preview: Assignment #1- MAT H 203 2.29 a) Calculations : 14+19+15+11+8=67% By summing the relative frequencies in the intervals 1.5-1.7, 1.7-1.9, 1.9-2.1, 2.1-2.3, and 2.3-2.5 we can conclude that 67% of the 2,929 aftershocks were between 1.5 and 2.5 on the Richter scale. b)By summing the relative frequencies in the intervals between 3.0 and 7.0 we can conclude that approximately 13% of the 2,929 aftershocks were above 3.0. 2.37 2.59 Ammonia 1.53 1.50 1.37 1.51 1.55 1.42 1.41 1.48 a. Calculating the mean: = = . + . + . + . + . + . + . + . i 18xi 1 53 1 50 1 37 1 51 1 55 1 42 1 41 1 48 = . x 11 778 = 1.47 The sample mean of the daily ammonia level in air in the tunnel is 1.47. b. Calculat ing the median: 1.37, 1.41, 1.42, 1.48, 1.50, 1.51, 1.53, 1.55 The middle 2 observat ions are 1.48 and 1.50. So m= (1.48+ 1.50)/2= 1.49 The sample median is an ammonia level of 1.49. c. The sample mean ammonia level was 1.47 and the sample median was 1.49....
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This note was uploaded on 02/13/2010 for the course MATH MATH 203 taught by Professor Drjosecorrea during the Winter '08 term at McGill.

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Assignment #1 - Assignment#1 MAT H 203 2.29 a Calculations...

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