I am using the package OnlineStats (I am open to suggested other packages) to compute the mean, variance, skewness, and kurtosis of data.

The data is Array{Float64,1}.

The following works fine:

```
mean(data)
var(data)
```

but skewness and kurtosis throws an error:

```
skewness(data)
kurtosis(data)
```

The error I get is:

```
**MethodError: objects of type Array{Float64,2} are not callable**
**Use square brackets [] for indexing an Array.**
in top-level scope at [untitled:38](#)
```

Note that data is free from NaN.

What am I doing wrong?