Which part do I need to fix for running this code? 个 ↓ o# Calculate the mean of X and yxmean = np.mean(X)ymean = np.mean(y)# Calculate the terms needed for the numator and denominator of betadf['xycov'] = (df['X'] - xmean) * (df['y'] - ymean)df['xvar'] = (df['x'1 - xmean)**2# Calculate beta and alphabeta = df['xycov'].sum() / df['xvar'].sum()alpha = ymean - (beta * xmean)print(f' alpha = {alpha}')print(f' beta = {beta}')KeyErrorTraceback (most recent call last)/usr/local/lib/python3.7/dist-packages/pandas/core/indexes/base.py in get_loc(self, key, method, tolerance)try:return self._engine.get_loc(casted_key)except KeyError as err:3360-> 33613362* 4 framespandas/_libs/hashtable_class_helper.pxi in pandas._libs.hashtable.PyobjectHashTable.get_item()pandas/_libs/hashtable_class_helper.pxi in pandas._libs.hashtable.PyobjectHashTable.get_item()KeyError: 'x'The above exception was the direct cause of the following exception:KeyError/usr/local/lib/python3.7/dist-packages/pandas/core/indexes/base.py in get_loc(self, key, method, tolerance)Traceback (most recent call last)return self._engine.get_loc(casted_key)except KeyError as err:raise KeyError(key) from err33613362-> 336333643365if is_scalar(key) and isna(key) and not self.hasnans:KeyError: 'x'

df['X'] - xmean and not df['x'] - mean (Capital X)

Answered: df['xvar'] = (df['x'l xmean)**2

Engineering

Computer Engineering

df['xvar'] = (df['x'l xmean)**2

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

Which part do I need to fix for running this code?

个 ↓ o
# Calculate the mean of X and y
xmean = np.mean(X)
ymean = np.mean(y)
# Calculate the terms needed for the numator and denominator of beta
df['xycov'] = (df['X'] - xmean) * (df['y'] - ymean)
df['xvar'] = (df['x'1 - xmean)**2
# Calculate beta and alpha
beta = df['xycov'].sum() / df['xvar'].sum()
alpha = ymean - (beta * xmean)
print(f' alpha = {alpha}')
print(f' beta = {beta}')
KeyError
Traceback (most recent call last)
/usr/local/lib/python3.7/dist-packages/pandas/core/indexes/base.py in get_loc(self, key, method, tolerance)
try:
return self._engine.get_loc(casted_key)
except KeyError as err:
3360
-> 3361
3362
* 4 frames
pandas/_libs/hashtable_class_helper.pxi in pandas._libs.hashtable.PyobjectHashTable.get_item()
pandas/_libs/hashtable_class_helper.pxi in pandas._libs.hashtable.PyobjectHashTable.get_item()
KeyError: 'x'
The above exception was the direct cause of the following exception:
KeyError
/usr/local/lib/python3.7/dist-packages/pandas/core/indexes/base.py in get_loc(self, key, method, tolerance)
Traceback (most recent call last)
return self._engine.get_loc(casted_key)
except KeyError as err:
raise KeyError(key) from err
3361
3362
-> 3363
3364
3365
if is_scalar(key) and isna(key) and not self.hasnans:
KeyError: 'x'

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