Question 5 1 pts the forecast for data with Moving Average method and downward and upward trend respectively. Underestimates, Overestimates Overestimates, Underestimates O Underestimates, Underestimates Cannot say O Overestimates, Overestimates Question 6 1 pts For a given time-series data, the 3-period moving average forecast at time "t+1" is the same as the 2-period moving average forecast at the time "t+1". Under such a condition, which of the following relation holds true? O At-1 = 2 * At-2 O At = 2 * At-1 O A7 + A12 = 2 * At-1 O At-1 + At-2 = 2 * At O A7 + At-1 = 2 * At-2 Question 7 1 pts If you apply linear regression on random noise time-series, what do you think the approximate values of slope and intercept would be 1,0 O 1,1 0,3 O 0,0 O 0,1 Question 8 1 pts Imagine you have time series data and after basic exploration, you found that the series displays a decreasing trend over time. As a result, you built the following linear regression forecasting model: Y : Bo + B1 * t + Which of the following do you think the direction of Biafter building the model? O Bi 0 O Bi > 0 O Bi