Question

During a statistics lesson, students were told to measure the amount of sugar in 8 sugar packets. Harry and his lab partner measured masses of: 3.4 grams 4.3 grams 2.4 grams 2.4 grams 4.2 grams 4.3 grams 4.3 grams 3.5 grams What is the mean mass? grams Submit

Answer 1

To find the mean, first, we have to sum all the masses.

`\begin{gathered} \Sigma x_i=3.4+4.3+2.4+2.4+4.2+4.3+4.3+3.5 \\ \Sigma x_i=28.8 \end{gathered}`

Then, we divide this sum by the total number of masses which is 8.

`\bar{x}=(28.8)/(8)=3.6`

Hence, the mean mass is 3.6 grams.