Question: The following table includes data about the number of households in different countries in the indicated year.

Census Households

Argentina 1970 129,728

Argentina 1980 672,062

Argentina 1991 1,148.351

Argentina 2001 1,040,852

Belarus 1999 385,508

Brazil 1960 613,273

Brazil 1970 1,022,207

Brazil 1980 1,343,377

Brazil 1991 2,012.276

Brazil 2000 2,652,356

Cambodia 1998 223,513

Chile 1970 199,041

Chile 1982 282,356

Chile 1992 373,964

Chile 2002 486,115

a. Using the numbers of households listed find Q3 and P56.

b. Find the percentile corresponding to 672,062 households.