function get_income_distribution(ed_level, year=2001) {
var mu = 0;
var sigma = 0;
let y_2001 = d3.interpolate(37570,37570)(0.2)
if (ed_level.toUpperCase() == "HS") {
mu = 36560;
sigma = d3.deviation(HiS_Completed);
}
else if (ed_level.toUpperCase() == "SC") {
mu = 39860;
sigma = d3.deviation(Some_College);
}
else {
mu = 59650;
sigma = d3.deviation(Bachelors);
}
return [mu, sigma]
}