1. In simple linear regression, the independent variable is the same as the explained variable. True / False 

2. In time series analysis, an occurrence like flu that attacks the elderly in masses during the same months of the year is referred to as the cyclical component of the time series. True / False 

3. In time series, unusual occurrences like the 9/11 plane crash into the World Trade Center are referred to as the random component of the time series. True / False