Null Hypothesis: Unit root (individual unit root process)

Series: FREQ

Date: 03/28/16 Time: 09:32

Sample: 1 144

Exogenous variables: Individual effects

Newey-West automatic bandwidth selection and Bartlett kernel

Total (balanced) observations: 142

Cross-sections included: 2

Method

Statistic

Prob.^**

PP-Fisher Chi-square

2.85680

0.5821

PP-Choi Z-stat

-0.03663

0.4854

^**Probabilities for Fisher tests are computed using an

asymptotic Chi-square distribution. All other tests

assume asymptotic normality.

Intermediate Phillips-Perron test results FREQ

Cross

section

Prob.

Bandwidth

Obs

FFV

0.4989

3.0

71

JLX

0.4805

3.0

71