ADMS 1000 Lecture Notes - Lecture 1: Skewness, Kurtosis, Variance
28 Jan 2015
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ADMS 1000 Full Course Notes
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To calculate the mean, we add the observations and divide the sum by the size of the sample. When placed in ascending order, the data appear as follows: The median is the fourth observation, which is ,347. Thus, there is no modal monthly income: range = largest observation smallest observation. From a, we get the mean of the seven observations is x. Thus, the sample standard deviation is s = =356. 53: from c, we can see the sample variance is n. The coefficient of variation is . 1622, which means there is approximately 16% variation from the mean. Also we can get numerical descriptive for monthly income of us residents from excel, as shown below. We label rooms occupied x and the breakfast income y. When placed in ascending order, the data of rooms occupied appear as follows: The median is the 13th observation, which is 38. When placed in ascending order, the data of income appear as follows:
