var createGraph = function(opts, data, expectRangeX, expectRangeY) {
if (data === undefined) data = ZERO_TO_FIFTY_STEPS;
if (expectRangeX === undefined) expectRangeX = [10, 20];
if (expectRangeY === undefined) expectRangeY = [0, 55];
var createGraph = function(opts, data, expectRangeX, expectRangeY) {
if (data === undefined) data = ZERO_TO_FIFTY_STEPS;
if (expectRangeX === undefined) expectRangeX = [10, 20];
if (expectRangeY === undefined) expectRangeY = [0, 55];