diff --git a/TimeSeries/2-ARIMA/README.md b/TimeSeries/2-ARIMA/README.md index 9bce07744..53d7fb666 100644 --- a/TimeSeries/2-ARIMA/README.md +++ b/TimeSeries/2-ARIMA/README.md @@ -155,8 +155,8 @@ It's time to implement ARIMA! You'll now use the `statsmodels` library that you Now you need to follow several steps 1. Define the model by calling `SARIMAX()` and passing in the model parameters: p, d, and q parameters, and P, D, and Q parameters. -1. The model is prepared on the training data by calling the fit() function. -2. Predictions can be made by calling the `forecast()` function and specifying the number of steps (the `horizon`) to forecast +1. The model is prepared on the training data by calling the fit() function. +1. Predictions can be made by calling the `forecast()` function and specifying the number of steps (the `horizon`) to forecast > 🎓 What are all these parameters for? In an ARIMA model there are 3 parameters that are used to help model the major aspects of a time series: seasonality, trend, and noise. These parameters are: diff --git a/quiz-app/src/assets/translations/en.json b/quiz-app/src/assets/translations/en.json index b323f0919..c00d3dee6 100644 --- a/quiz-app/src/assets/translations/en.json +++ b/quiz-app/src/assets/translations/en.json @@ -2193,49 +2193,53 @@ "title": "Time Series ARIMA: Pre-Lecture Quiz", "quiz": [ { - "questionText": "q1", + "questionText": "ARIMA stands for", "answerOptions": [ { - "answerText": "a", + "answerText": "AutoRegressive Integral Moving Average", "isCorrect": "false" }, { - "answerText": "b", - "isCorrect": "true" + "answerText": "AutoRegressive Integrated Moving Action", + "isCorrect": "false" }, { - "answerText": "c", - "isCorrect": "false" + "answerText": "AutoRegressive Integrated Moving Average", + "isCorrect": "true" } ] }, { - "questionText": "q2", + "questionText": "Stationarity refers to", "answerOptions": [ { - "answerText": "a", + "answerText": "data whose attributes does not change when shifted in time", + "isCorrect": "false" + }, + { + "answerText": "data whose distribution does not change when shifted in time", "isCorrect": "true" }, { - "answerText": "b", + "answerText": "data whose distribution changes when shifted in time", "isCorrect": "false" } ] }, { - "questionText": "q3", + "questionText": "Differencing", "answerOptions": [ { - "answerText": "a", + "answerText": "stabilizes trend and seasonality", "isCorrect": "false" }, { - "answerText": "b", - "isCorrect": "true" + "answerText": "exacerbates trend and seasonality", + "isCorrect": "false" }, { - "answerText": "c", - "isCorrect": "false" + "answerText": "eliminates trend and seasonality", + "isCorrect": "true" } ] } @@ -2246,48 +2250,52 @@ "title": "Time Series ARIMA: Post-Lecture Quiz", "quiz": [ { - "questionText": "q1", + "questionText": "ARIMA is used to make a model fit the special form of time series data", "answerOptions": [ { - "answerText": "a", + "answerText": "as flat as possible", "isCorrect": "false" }, { - "answerText": "b", + "answerText": "as closely as possible", "isCorrect": "true" }, { - "answerText": "c", + "answerText": "via scatterplots", "isCorrect": "false" } ] }, { - "questionText": "q2", + "questionText": "Use SARIMAX to", "answerOptions": [ { - "answerText": "a", + "answerText": "manage seasonal ARIMA models", "isCorrect": "true" }, { - "answerText": "b", + "answerText": "manage special ARIMA models", + "isCorrect": "false" + }, + { + "answerText": "manage statistical ARIMA models", "isCorrect": "false" } ] }, { - "questionText": "q3", + "questionText": "'Walk-Forward' validation involves", "answerOptions": [ { - "answerText": "a", + "answerText": "re-evaluating a model progressively as it is validated", "isCorrect": "false" }, { - "answerText": "b", + "answerText": "re-training a model progressively as it is validated", "isCorrect": "true" }, { - "answerText": "c", + "answerText": "re-configuring a model progressively as it is validated", "isCorrect": "false" } ]