Exercise

# Chunking a NumPy array

A NumPy array has been provided for you as `energy`

. This is the electricity load
in kWh for the state of Texas sampled every 15 minutes over the year 2000
(that's about 35 thousand samples).

Your job is to convert the NumPy array into a `dask.array`

; the `dask.array`

should have chunks whose sizes are
1/4 of the number of elements of the array `energy`

. You will then inspect the chunk sizes of the Dask
array. Finally, you'll compute the mean electricity load in kWh in two ways (using the `dask.array`

and using the NumPy array) to compare the results.

Instructions

**100 XP**

- Invoke
`da.from_array()`

with`energy`

and`chunks=`

1/4 length of array`energy`

. - Print
`energy_dask.chunks`

. - Print the mean value of the Dask array
`energy_dask`

, and then the mean value of the NumPy array`energy`

.