Respondents (R)

Pre-test scores (%)

Post-test scores (%)

Difference in scores (+%)

R1

20

70

50

R2

20

70

50

R3

20

60

40

R4

20

60

40

R5

60

90

30

R6

50

70

20

R7

20

60

40

R8

60

90

30

R9

50

80

30

R10

20

50

30

R11

20

50

30

R12

20

50

30

R13

20

80

60

R14

40

70

30

R15

40

90

50

R16

20

50

30

R17

30

70

40

R18

20

50

30

R19

20

40

20

R20

25

60

35

R21

30

55

25