Income Category

Mean

Median

Standard deviation

Observations

Low Income

0.0332

0.0254

0.0584

84

Low & middle Income

0.0461

0.0346

0.0733

266

Upper middle Income

0.0395

0.0307

0.0625

196

High Income

0.0054

−0.0018

0.0541

345

All the samples

0.0281

0.0167

0.0656

868