103.5

255

204

2.5

51

202

25

88.8

87

137

82

1.8

55

219

26

133.1

130.8

212

156

2.3

56

226

27

81.5

78.9

111

54

2.6

57

235

28

103.4

96

154

96

7.4

58

227

29

96.5

94.9

300

241

1.6

59

228

30

103

97.2

192

124

5.8

68

223

31

76.8

73.2

165

96

3.6

69

217

32

126

123.2

226

152

2.8

74

218

33

103.7

95.5

199

120

8.2

79

210

34

108.1

100.9

167

87

7.2

80

232

35

107

99.2

232

63

7.8

169

Table no. 2: Weight loss and change in TG level, continuous data.

class for weight loss

frequency

class for change in TG level

frequency

-1.9_-1.0

1

-349_-305

1

-0.9_0

1

-304_-260

0

0.1_1.0

1

-259_-215

0

1.1_2.0

6

-214_-170

0

2.1_3.0

9

Weight loss modal class

-169_-125

0

3.1_4.0

3

-124_-80

0

4.1_5.0

2

-79_-35

7

5.1_6.0

3

-34_10

7

6.1_7.0

1

Change in TG level

modal class

11_55

10

7.1_8.0

5

56_100

9

8.1_9.0

2

101_145

0

9.1_10.0

1

146_190

1

The analysis of discreet data from table No. 1, we can calculate the mean, median and mode. The mean weight loss of the 35 patients is 3.93 and the change in TG level is 11.37. The median analysis, shows that 2.8 is the median for change in weight loss and 18 is the median for change in TG level. 2.1 - 3 kgs is the modal class for change in weight and 11- 55 is the modal class for change in TG level, as we have the maximum number of patients in this class.

When we want to calculate the mean, median and mode for continuous data, the data from table 2 has to further arranged as follows:

class (grouped data)

weight loss(x)

frequency(f)

cumulative frequency

f * x

class (grouped data)

change in TG level(x)

frequency(f)

cumulative frequency

f *...

Hence, this study of the two variables uses various statistical techniques to clearly understand the relationship, which are presented in the following pages.

From the information provided, the patients taken up for study , have their body weights within the range of 69.4 and 133.1 Kgs. After 8 weeks of exercise, diet and drug treatment, it is observed that there is decrease in weight and also a decrease in the triglyceride levels. The tabular column showing the change in weight loss and change in the triglyceride levels is shown below:

The analysis of discreet data from table No. 1, we can calculate the mean, median and mode. The mean weight loss of the 35 patients is 3.93 and the change in TG level is 11.37. The median analysis, shows that 2.8 is the median for change in weight loss and 18 is the median for change in TG level. 2.1 - 3 kgs is the modal class for change in weight and 11- 55 is the modal class for change in TG level, as we have the maximum number of patients in this class.

This graph shows clearly the nature of the patients. Their weights and the change in the TG level are shown. It can be seen from the graphs that majority of the patients being to the class of 2.1 - 3.0.
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