Illustration 15.15. The table below gives the data regarding number of students appearing the pass percentage. Is there any correlation between the two? No. of students аppearing x (lakhs) Year Pass Deviation Deviation Concurren.ce Percentage in in y 1985 2.0 47 1986 2.2 46 1987 2.4 44 - 1988 2.3 43 1989 . 2.6 46 1990 2.8 45 - 1991 2.7 46 - 1992 2.9 42 - 1993 2.8 40 - 1994 2.9 43 o| | + + ||| + + + | + | | + | + + | + | +

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