 According to scaling exponent given by MF-DFA , h(q=2)>1, we found that all underlying data  belong to non-stationary process.
<fluency>  According to scaling exponent given by MF-DFA , h(q=2)>1, we found that all underlying data  belong to non-stationary process.
 According to scaling exponent given by MF-DFA , h(q=2)>1, we find that all underlying data belong to non-stationary process.