Quandaries
and Queries 

My name: Gary I am a student. The level of the question: College. I had several questions regarding a percentile grid, and I just wanted
to Table 1 1 $1,300 Q. The percentage of families in Table 1 with incomes below $58,100
was Could you please verify for me that my answers are correct? Thanks, 

Hi Gary, I drew a diagram to show the fiftieth percentile and the seventyfifth percentile. The fiftieth percentile is $36,800 so 50% of the area under the curve is to the left of $36,800 (the region shaded red). The seventyfifth percentile is $58,100 so 75% of the area under the curve is to the left of $58,100. Hence the region shaded blue is 25% of the area. Hence the answer to the first question is 75%. Penny 

