20 If you have trend in a data series how can you confirm it

20. If you have trend in a data series how can you confirm it and determine if it is statistically significant\" (Points : 3)

     A. Autocorrelation functions that spike in the 4th and 8th quarters and have LBQ values below the LBQ table values.

     B. A time series plot that shows the data rising and falling.

     C. Histogram that shows the data centered around a zero mean value with a normal distribution.

     D. Autocorrelation functions that step down toward zero and have LBQ values above the Chi-square tables values

Solution

A time series plot that shows the data rising and falling.