Question
Consider the following sample of five values and corresponding weights:$$\begin{array}{cc}\hline x_i & w_i \\\hline 4.6 & 8 \\3.2 & 3 \\5.4 & 6 \\2.6 & 2 \\5.2 & 5 \\\hline\end{array}$$a. Calculate the arithmetic mean of the $x_i$ values without weights.b. Calculate the weighted mean of the $x_i$ values.
Step 1
The values are: \( x_1 = 4.6 \), \( x_2 = 3.2 \), \( x_3 = 5.4 \), \( x_4 = 2.6 \), \( x_5 = 5.2 \). The weights are: \( w_1 = 8 \), \( w_2 = 3 \), \( w_3 = 6 \), \( w_4 = 2 \), \( w_5 = 5 \). Show more…
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