A company want to find out if there is a linear relationship between indirect labor expense (ILE), in dollars, and direct labor hours (DLH). Data for direct labor hours and indirect labor expense for 25 months are given.
DLH(X) - ILE(Y)20 - 36125 - 40022 - 37623 - 38420 - 36119 - 36024 - 427.228 - 458.426 - 450.829 - 475.227 - 462.625 - 44528 - 51132 - 550.835 - 587.834 - 574.130 - 535.436 - 591.5
Treating ILE as the response variable, use regression to fit a straight line to all 18 data points.
Approximately what percentage of the variation in indirect labor expenses is explained by the regression model you derived?
Place your answer, rounded to 1 decimal place, in the blank. Do not use any stray punctuation marks or a percentage sign. For example, 78.9 would be a legitimate entry.

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