if you look at the instruction **03** should be **02** and vise versa

and last instruction **04** there is no list called variance in the programe so how can you pass it as a argument.

if you look at the instruction **03** should be **02** and vise versa

and last instruction **04** there is no list called variance in the programe so how can you pass it as a argument.

Hi why ? the instuction are on the right oder..

1 Define a function **grades_std_deviation(variance)**.

`def grades_std_deviation(variance):`

2 **return** the result of **variance ** 0.5**

```
def grades_std_deviation(variance):
return variance ** 0.5
```

3 After the function, ** create** a new

`variance`

```
def grades_std_deviation(variance):
return variance ** 0.5
variance = grades_variance(grades)
```

4 Finally **print** the result of calling **grades_std_deviation(variance)**.

```
def grades_std_deviation(variance):
return variance ** 0.5
variance = grades_variance(grades)
print grades_std_deviation(variance)
```