Data Analysis, SM-Bank 050

Brandon made a dot plot to show the hours he worked over the last 16 weeks.

What is the mean number of hours that Brandon worked over that last 16 weeks? (2 marks)

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\(15.75\ \text{hours}\)

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\(\text{Mean}\ \)	\(=\dfrac{\text{Sum of the scores}}{\text{Number of scores}}\)
	\(=\dfrac{2\times 13+3\times 14+3\times 15+3\times 16+2\times 17+3\times 19}{16}\)
	\(=\dfrac{252}{16}\)
	\(=15.75\ \text{hours}\)