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MEASURES OF CENTRAL TENDENCY - Speech or Presentation Example

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Measures of central tendency refers to the descriptive statics and they include mean, mode and the median (Healey, 2009).  Mean is the most common measure of central tendency compared to the mode and median, it is the sum of all the values divided by the total number of the…
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Download file to see previous pages It is used for normal data (Holcomb, 1998). 
d. Outliers mainly affect the mean by either reducing or increasing it since all values are added together in finding mean. However, outliers have very little effect on the median and none on the mode.
d. A box plot also known as whisker plot is a graphical representation of quantitative data (Ott & Longnecker, 2010).  A box plot splits the data into quartiles where the box part represents the first, second and third quartiles. Also the two horizontal lines represents the values from the first quartile to the smallest non-outlier in the data and from the third quartile to the largest non-outlier respectively. The data above has one outlier which is shown as a point on the box plot proceeding the first quartile, the data is also skewed to the ...Download file to see next pagesRead More
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