Ex1 Ex2 Ex3 
S1  97  44  87
S2  87  51  81
S3  75  52  63
S4  76  43  58
S5  88  79  82
S6  69  53  58
S7  71  53  41
S8  89  50  54
S9  95  66  74
S10 81  64  78
S11 75  49  71
S12 75  57  62
S13 48  37  40
S14 93  65  70
S15 72  58  48
S16 73  64  81
S17 87  73  99
S18 96  58  69
S19 45  60  53
S20 78  39  78
S21 72  42  50
S22 85  78  93
S23 75  71  76
S24 77  55  84
S25 76  62  78
S26 55  47  20
S27 79  73  81
S28 92  69  96
S29 57  31  35
S30 63  67  78
S31 72  60  62
S32 62  41  39
S33 78  56  74
S34 74  60  71
S35 59  28  56
S36 94  60  65
S37 44  45  42
S38 73  47  74
S39 65  53  76
S40 85  76  77  <==
S41 89  66  89
S42 50  38  46
S43 81  57  65
S44 65  33  71
S45 84  61  83
S46 96  67  92
S47 45  47  30
S48 98  80  96
                              
AV 75.3 55.9 67.6
SD 14.6 12.8 18.5

For Student S40, the lowest exam grade, 76, was one of the highest
scores on Exam 2.