Question

Help please please please help help Standard Deviation of Wild Cat

Answer 1

We are given the following data for various wild large cats

`65,50,35,50,45,25,40,40,20`

here, n = 9

Note: Standard deviation Formula

The x - bar denotes the mean

First, we find the mean

`\begin{gathered} \bar{x}=(65+50+35+50+45+25+40+40+20)/(9) \\ \bar{x}=(370)/(9) \end{gathered}`

Now we will do x - mean, we have the answers as follows

`(215)/(9),(80)/(9),-(55)/(9),(80)/(9),(35)/(9),-(145)/(9),-(10)/(9),-(10)/(9),-(190)/(9)`

We will find their squares

`\begin{gathered} Standard\text{ }Deviation\sqrt{(((215)/(9))^2+2((80)/(9))^2+((55)/(9))^2+((35)/(9))^2+((145)/(9))^2+2((10)/(9))^2+((190)/(9))^2)/(9)} \\ \\ Standard\text{ }Deviation= \\ \end{gathered}`