Solve the problem.
-The signal-to-noise ratio of a set of data is obtained by dividing the mean by the standard deviation. Find the signal-to-noise ratio for the following sample of weights (in pounds): $$\begin{array} { l l l l l }
128 & 147 & 186 & 105 & 197 \
155 & 172 & 130 & 116 & 125
\end{array}$$
A) 4.9
B) 4.5
C) 0.2
D) 4.7

Question

Solve the problem.
-The signal-to-noise ratio of a set of data is obtained by dividing the mean by the standard deviation. Find the signal-to-noise ratio for the following sample of weights (in pounds): $$\begin{array} { l l l l l } 
128 & 147 & 186 & 105 & 197 \
155 & 172 & 130 & 116 & 125
\end{array}$$
A) 4.9
B) 4.5
C) 0.2
D) 4.7

Quizplus · Accepted Answer

To find the signal-to-noise ratio, we need to first find the mean and standard deviation of the given data. Using a calculator, we get the mean to be approximately 146.6 pounds and the standard deviation to be approximately 33.6 pounds. Dividing the mean by the standard deviation gives us a signal-to-noise ratio of approximately 4.377. Therefore, the closest answer choice is D, 4.7.

Solve the Problem 128147186105197155172130116125\begin{array} { l l l l l } 128 & 147 & 186 & 105 & 197 \\155 & 172 & 130 & 116 & 125\end{array}128155​147172​186130​105116​197125​

Solve the Problem $\begin{array} { l l l l l } 128 & 147 & 186 & 105 & 197 \\155 & 172 & 130 & 116 & 125\end{array}$