After performing a multivariate regression, a person determines that the variance of one of the independent variables is not consistent through the sample.
Which potential problem is this an indication of?
•Autocorrelation
•Cointegration
•Standard Error
•Heterscedasticity
An analyst creates a scatterplot of a company’s monthly sales such that the sales are on the vertical y-aixs and the month is on the horizontal x-axis. The scatterplot shows close to perfect, positive linear relationship.
Which time series pattern ill the monthly sales data exhibit?
•Seasonality
•Trend
•Cyclicality
•Irregularity