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

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

Computer Networking: A Top-Down Approach (7th Edition)
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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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'
Transcribed Image Text: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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