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##### The exercice is validated is all questions of the exercice are validated
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The question 1 is validated if the output is similar to what `unstacked_df.head()`returns:
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| Date | ('Prediction', 'AAPL') | ('Prediction', 'AMZN') | ('Prediction', 'DAI') | ('Prediction', 'FB') | ('Prediction', 'GE') |
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|:--------------------|-------------------------:|-------------------------:|------------------------:|-----------------------:|-----------------------:|
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| 2021-01-01 00:00:00 | 0.382312 | -0.072392 | -0.551167 | -0.0585555 | 1.05955 |
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| 2021-01-04 00:00:00 | -0.560953 | 0.503199 | -0.79517 | -3.23136 | 1.50271 |
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| 2021-01-05 00:00:00 | 0.211489 | 1.84867 | 0.287906 | -1.81119 | 1.20321 |
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##### The question 2 is validated if the answer is: `unstacked.plot(title = 'Stocks 2021')`. The title can be anything else.
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