Question

The graph of a normal curve is given on the right. Use the graph to identify the values.I need help with the variation portion

Answer 1

The position of the mean and standard deviation are shown in the diagram below:

The mean is value at the center of the distribution

The standard deviation is the difference between the mean and the first value to the right

Comparing the given graph to the diagram above, we can conclude that:

`\begin{gathered} \mu\text{ = -9} \\ \sigma\text{ = -8 - \lparen-9\rparen} \\ =\text{ -8 + 9} \\ =\text{ 1} \end{gathered}`

Answer:

`\begin{gathered} \mu\text{ = -9} \\ \sigma\text{ = 1} \end{gathered}`