Stratified Sampling - Screen 7

Q&A DQ Courses
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#1

Hello everyone,

I think the answer to this instruction is somehow complex to understand, and it can be answered in a shorter yet more understandable way. Here is my solution:

Screen Link: https://app.dataquest.io/m/283/sampling/7/stratified-sampling

My Code:

wnba['SPG'] = wnba['PTS'] / wnba['Games Played']
mean_pos = dict()

for position in wnba['Pos'].unique():
    mean_score = wnba.groupby('Pos').get_group(position)['SPG'].sample(10, random_state=0).mean()
    mean_pos[position] = mean_score

position_most_points = max(mean_pos, key=mean_pos.get)

I hope my solutions help my fellow learners to understand this part easier.
Enjoy Learning!

13 Likes
#2

This makes more sense to me, I hate writing out multiple variable names per group if I can avoid it. Way tidier.

3 Likes
#3

Great answers!
I also had something simpler :wink:

wnba["PPG"] = wnba["PTS"] / wnba["Games Played"]

strata = ['F','G','C','G/F','F/C']
stratum_dict = {}
for s in strata:
    sample = wnba[wnba['Pos'] == s].sample(10, random_state=0)
    mean = sample["PPG"].mean()
    stratum_dict[s] = mean
    
position_most_points = max(stratum_dict,key=stratum_dict.get)

For the first time in a month it’s really clear what I’m doing haha.

9 Likes