Graph 1

Graph 2

Definitions of the explained and explanatory variables used in the econometric model
| Variable | Definition |
|---|---|
| Investment | |
| Tobin's Q | |
| Cash Flow | |
| Business sector | |
| Size |
Spearman correlations for all continuous variables considered in the econometric model
| Variable | Investment | Tobin's Q | Cash flow | Investment | Tobin's Q | Cash flow |
|---|---|---|---|---|---|---|
| 2008 | 2014 | |||||
| Investment | 1 | 1 | ||||
| Tobin's Q | 0.1065 | 1 | 0.0448 | 1 | ||
| Cash Flow | 0.1243 | −0.0289 | 1 | 0.1445 | −0.0258 | 1 |
Model for investment estimation results using the Ordinary Least Squares method with robust standard errors
| Variable | Model 1 (for 2008) | Model 2 (for 2014) |
|---|---|---|
| Tobin's Q | 0.1474*** (0.0519) | 0.01488 (0.0411) |
| Cash Flow | 1.1029*** (0.3592) | 0.7517*** (0.2697) |
| Business sector (Manufacturing – base level) | ||
| Construction | 0.1559** (0.0767) | −0.0438 (0.0631) |
| Trade | 0.2669*** (0.0784) | 0.0291 (0.0596) |
| Other services | 0.2441*** (0.0746) | 0.1099** (0.0493) |
| Size (Small firms - baselevel) | ||
| Medium-sized firms | −0.1617** (0.0823) | −0.1393*** (0.0508) |
| Large firms | −0.1817*** (0.0746) | −0.1646*** (0.0519) |
| Constant term | 0.2701*** (0.0936) | 0.3315*** (0.0550) |
| Number of observations | 236 | 524 |
| R2 | 0.2042 | 0.0771 |
| Adj R2 | 0.1980 | 0.0645 |
| F test for business sector | 6.39 [0.0004] | 2.54 [0.0554] |
| F test for size | 3.00 [0.0519] | 6.46 [0.0017] |
| F test for joint insignificance | 9.29 [0.0000] | 5.90 [0.0000] |
| Diagnostic tests | p-value | |
| Model 1 | Model 2 | |
| RESET test | 0.7948 | 0.0411 |
| Jarque-Bera test | 0.0000 | 0.0000 |
| Chow test for size | 0.6191 | 0.0000 |
| Breusch-Pagan test | 0.0005 | 0.0000 |
| White test | 0.0009 | 0.0001 |
Summary statistics of the variables considered in the econometric model
| Variable | Mean | Lower quantile | Median | Upper quantile | Mean | Lower quantile | Median | Upper quantile |
|---|---|---|---|---|---|---|---|---|
| 2008 | 2014 | |||||||
| Investment | 0.408 | 0.017 | 0.203 | 0.650 | 0.347 | 0.019 | 0.145 | 0.465 |
| Tobin's Q | 0.812 | 0.422 | 0.677 | 1.033 | 0.729 | 0.406 | 0.608 | 0.882 |
| Cash Flow | 0.075 | 0 | 0.050 | 0.128 | 0.066 | 0 | 0.036 | 0.112 |
| Investment by business sector | ||||||||
| Construction | 0.405 | 0.089 | 0.259 | 0.579 | 0.242 | 0.019 | 0.095 | 0.228 |
| Trade | 0.420 | 0 | 0.331 | 0.743 | 0.316 | 0.018 | 0.122 | 0.393 |
| Other services | 0.499 | 0 | 0.214 | 1.159 | 0.439 | 0.006 | 0.183 | 0.767 |
| Manufacturing | 0.320 | 0.068 | 0.170 | 0.419 | 0.285 | 0.045 | 0.139 | 0.276 |
| Investment by size | ||||||||
| Small firms | 0.438 | 0 | 0.110 | 1.041 | 0.421 | 0 | 0.151 | 0.826 |
| Medium firms | 0.400 | 0.064 | 0.210 | 0.627 | 0.269 | 0.061 | 0.159 | 0.276 |
| Large firms | 0.395 | 0.153 | 0.283 | 0.552 | 0.247 | 0.063 | 0.131 | 0.264 |
