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26 votes
26 votes
Jim's physics quiz scores were78, 81, 78, 56, and 83. What washis mean score?

User MacAnthony
by
2.7k points

1 Answer

20 votes
20 votes

SOLUTION

Given the question in the image, the following are the solution steps to answer the question.

STEP 1: Write Jim's physics scores


78,81,78,56,83

STEP 2: Write the formula for calculating mean


\begin{gathered} The\:arithemtic\:mean\:\left(average\right)\:is\:the\:sum\:of\:the\:values\:in\:the\:set\:divided\:by\:the\:number\:of\:elements\: \\ \:in\:that\:set. \\ \mathrm{If\:our\:data\:set\:contains\:the\:values\:}a_1,\:\ldots\:,\:a_n\mathrm{\:\left(n\:elements\right)\:then\:the\:average}=(1)/(n)\sum_(i=1)^na_i\: \end{gathered}

STEP 3: Calculate the mean


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User Mehul Velani
by
2.9k points
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