Question

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

Answer 1

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

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

STEP 3: Calculate the mean

$undefined$