Statistical Sciences 1023A/B Chapter Notes - Chapter 7: Unimodality, Quartile, Standard Deviation
20 Apr 2017
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To calculate the mean, simply add together all the values of the observations, then divide by the total number of observations. Measuring center: the median (the middle same amount of numbers above and below the number designated as the median) The median, m, is the midpoint of a distribution, the number such that half of the observations are smaller and the other half are larger. To find the median of a distribution: arrange all observations from smallest to largest, if the number of observations n is odd, the median m is the center observation in the ordered list. 1)/2 observations from the start of the list. Median: halfway between the highest and lowest values. Outliers: values far removed from the rest of the data. Range: the amount between the lowest and highest numbers. Reasons for outliers: the outlier is a legitimate data value and represents natural variation in responses.
