READ Free Dumps For EMC- E20-007
| Question ID 16150 | What does R code nv <- v[v < 1000] do? |
| Option A | Selects the values in vector v that are less than 1000 and assigns them to the vector nv |
| Option B | Sets nv to TRUE or FALSE depending on whether all elements of vector v are less than 1000 |
| Option C | Removes elements of vector v less than 1000 and assigns the elements >= 1000 to nv |
| Option D | Selects values of vector v less than 1000, modifies v, and makes a copy to nv |
| Correct Answer | A |
| Question ID 16151 | Before you build an ARMA model, how can you tell if your time series is weakly stationary? |
| Option A | There appears to be a constant variance around a constant mean. |
| Option B | The mean of the series is close to 0. |
| Option C | The series is normally distributed. |
| Option D | There appears to be no apparent trend component. |
| Correct Answer | A |