The accompanying table lists the 2010 median household incomes, rounded to the nearest dollar, for all 50 states and the District of Columbia.

a. Construct a frequency distribution table. Use the following classes: $37,000€“41,999, $42,000€“46,999, $47,000€“51,999, $52,000€“56,999, $57,000€“61,999, and $62,000€“66,999.
b. Calculate the relative frequency and percentage for each class.
c. Based on the frequency distribution, do the data appear to be symmetric or skewed?
d. What percentage of these states had an estimated median household income of $52,000 or more?

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2010 Median Household Income dollars) 40,976 58,198 47.279 38,571 54.459 60,442 66,452 55,269 55,528 44,243 44,108 58,507 47,014 50,761 46,322 49,177 46,229 41.236 39.443 48,133 64,025 61,333 46,441 52,554 37,985 46,184 2010 Median Household Income (dollars) 41,467 52,728 51,525 66,707 63.540 45.098 49,826 43,753 51,380 46,093 43,400 50,526 48.460 51,914 41.709 45,669 38,686 47.464 56,787 55,942 60,363 56,253 42.839 50,522 52,359 State State MT AK AZ AR CA CO CT DE NH NJ NC он OK OR PA GA ID IL IN IA KS KY LA ME SD TX VA WA MS MO