Question

Employees of OxCo Mfg. were surveyed to evaluate the company's pension plan. The table below displays some of the results of the survey Rating of Pension Plan Fair 92 133 Years Employed Excellent GoodF Poor Row Total Under 10 10 to 25 25 or moree Col Total 26 37 17 80 92 159 69 320 240 71 19 120 160 6.206 chi-square Degrees of freedom for this test (shaded cell below the table) would be O 799 O 12 6

Answer 1

Here, Number of rows = 3 and number of columns = 4

Degrees of freedom = (row - 1) × (column - 1)

=> Degrees of freedom = (3 - 1) × (4 - 1) = 2 × 3 = 6

Therefore, degrees of freedom for this test = 6