Answer:
57 to 66
Step-by-step explanation:
A standard deviation is the average difference away from the mean that each value is, so the first thing we must do is find the mean of these values
This can be done by adding up all of the scored and dividing that value by the total number of scores. It would look like this
[tex]\frac{64+61+67+59+60+58+57+71+56+62}{10} = 61.5[/tex]
Next to find the values within one standard deviation of the mean, we can add and subtract the standard deviation value from the mean.
So it would look like this
[tex]61.5-4.5 =57[/tex]
[tex]61.5+4.5=66[/tex]
This means that the range is 57 to 66
