This community-built FAQ covers the “Customer Types” exercise from the lesson “Project: Board Slides for FoodWheel”.
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FAQs on the exercise Customer Types
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Is the .values method necessary for Histograms? It wasn’t covered in the Data Science Path and I seem to be able to get the same graph using:
plt.ylabel("Number of Customers")
plt.title('Customer Expenditure Over 6 Months')
I can’t complete this exercise. i think that the problem is that codeacademy don’t load the database necessary to successfully run my code.
from matplotlib import pyplot as plt
import pandas as pd
orders = pd.read_csv(‘orders.csv’)`
it worked for me
There’s no explanation of what .values does in the Data Science course. I don’t understand why it’s necessary and this awful platform does nothing to help you.
From what I’ve gathered adding .values converts a series in a data frame to a list of values (array).
Though no real explanation was given, this method was used in exercise 2 (What cuisines does FoodWheel offer) to get the values from a series and use them as labels in the pie chart.
Hey can someone explain why we have to select the price values for the hist?
Since I thought that it was already included in the customer_amount variable
plt.hist(customer_amount.price.values, range=(0, 200), bins=40)
You do not have to specify .values. I’m not sure why this was included in the Solution, since you can remove it and generate the same graph.
I also noticed that you can’t use
to set the range, even though it accomplishes the task. Oh well.
It’s a shame that I’m finding so many errors or inconsistencies within the data science career path lately. Up until recently it has been great, however now I’m finding some really discouraging issues including but not limited to the following:
- some critical info has not been taught to complete the given exercise or is (for the first time) mentioned in a “hint” for that exercise.
- if there is a different (correct) way to write the code than what is expected in the exercise, the parser rejects the input as invalid code – different than sending a simple message to the user that an alternate input syntax is desired.
- inconsistencies with having to import libraries at the start of the exercise
Very frustrating when trying to learn!
I was wondering if anyone else was having the same problem with .values(). It seems that we all are!
I didnt seem to need .values. This code worked fine for me;
plt.hist(customer_amount.price, bins = 40, range = (0, 200))
plt.ylabel(‘Number of Customers’)
I totally get you. I’ve noticed several inconsistencies as well.
Is it just me or did anyone else not see the resulting graph even with plt.show()?