Referenced from lesson Grouped Samples (Spring, 2021)
Use method chaining to define the grouped samples below, using the helper functions that you’ve already defined: is-old, is-young, is-cat, is-dog, is-female, lookup-fixed, and has-s-name. We’ve given you the solution for the first sample, to get you started.
| Subset | The code to define that subset | |
|---|---|---|
1 |
Kittens |
|
2 |
Puppies |
|
3 |
Fixed Cats |
|
4 |
Cats with “s” in their name |
|
5 |
Old Dogs |
|
6 |
Fixed Animals |
|
7 |
Old Female Cats |
|
8 |
Fixed Kittens |
|
9 |
Fixed Female Dogs |
|
10 |
Old Fixed Female Cats |
These materials were developed partly through support of the National Science Foundation,
(awards 1042210, 1535276, 1648684, and 1738598). 
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