Question 1.40

1.40 Describe the IQ scores. Make a graph of the distribution of IQ scores for the seventh-grade students in Table 1.3. Describe the shape, center, and spread of the distribution, as well as any outliers. IQ scores are usually said to be centered at 100. Is the midpoint for these students close to 100, clearly above, or clearly below?

SEVENGR

26

Table : TABLE 1.3 Educational Data for 78 Seventh-Grade Students
OBS GPA IQ Gender Self-
concept 		OBS GPA IQ Gender Self-
concept
001 7.940 111 M 67 043 10.760 123 M 64
002 8.292 107 M 43 044 9.763 124 M 58
003 4.643 100 M 52 045 9.410 126 M 70
004 7.470 107 M 66 046 9.167 116 M 72
005 8.882 114 F 58 047 9.348 127 M 70
006 7.585 115 M 51 048 8.167 119 M 47
007 7.650 111 M 71 050 3.647 97 M 52
008 2.412 97 M 51 051 3.408 86 F 46
009 6.000 100 F 49 052 3.936 102 M 66
010 8.833 112 M 51 053 7.167 110 M 67
011 7.470 104 F 35 054 7.647 120 M 63
012 5.528 89 F 54 055 0.530 103 M 53
013 7.167 104 M 54 056 6.173 115 M 67
014 7.571 102 F 64 057 7.295 93 M 61
015 4.700 91 F 56 058 7.295 72 F 54
016 8.167 114 F 69 059 8.938 111 F 60
017 7.822 114 F 55 060 7.882 103 F 60
018 7.598 103 F 65 061 8.353 123 M 63
019 4.000 106 M 40 062 5.062 79 M 30
020 6.231 105 F 66 063 8.175 119 M 54
021 7.643 113 M 55 064 8.235 110 M 66
022 1.760 109 M 20 065 7.588 110 M 44
024 6.419 108 F 56 068 7.647 107 M 49
026 9.648 113 M 68 069 5.237 74 F 44
027 10.700 130 F 69 071 7.825 105 M 67
028 10.580 128 M 70 072 7.333 112 F 64
029 9.429 128 M 80 074 9.167 105 M 73
030 8.000 118 M 53 076 7.996 110 M 59
031 9.585 113 M 65 077 8.714 107 F 37
032 9.571 120 F 67 078 7.833 103 F 63
033 8.998 132 F 62 079 4.885 77 M 36
034 8.333 111 F 39 080 7.998 98 F 64
035 8.175 124 M 71 083 3.820 90 M 42
036 8.000 127 M 59 084 5.936 96 F 28
037 9.333 128 F 60 085 9.000 112 F 60
038 9.500 136 M 64 086 9.500 112 F 70
039 9.167 106 M 71 087 6.057 114 M 51
040 10.140 118 F 72 088 6.057 93 F 21
041 9.999 119 F 54 089 6.938 106 M 56