How is statistics useful to a policy maker?
The similar type of question is explained in detail in our NCERT solutions. You can refer to the same following the below mentioned link.
https://www.meritnation.com/cbse/class11-commerce/ncert-solutions/economics/statistics-for-economics/introduction/page8-exercise-qno3/443_2493_15523/the-government-and-policy-makers-use-statistical-data-to
https://www.meritnation.com/cbse/class11-commerce/ncert-solutions/economics/statistics-for-economics/introduction/page8-exercise-qno3/443_2493_15523/the-government-and-policy-makers-use-statistical-data-to