It might be Annual salary?
Y2-Y1
Over X2-X1 and then there is your slode
The quadratic formula is hard to type on this
3 (+ , -) (sqroot of 41)
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8
Answer with explanation:
Class Interval Variate Frequency
16-18 16 1
19-21 0 0
22-24 0 0
25-27 26,27 2