Weight Loss of the Sexes

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Weight Loss for the Sexes
By Brian Singer and Ali Azar Statistics 1
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Weight Loss of the Sexes

• Does the Calfit1 program( a 12 week weight loss
  program) work more effectively for males or
  females?

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Sources

• We randomly surveyed 15 couples whom recently
  became members at California Family Fitness
  (Orangevale), and enrolled for the Calfit 1
  program to lose weight.
• We asked their permission before they started
  their 12 week Calfit 1 program to record the
  number of pounds they lost at the end of the
  program.

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Our Hypothesis

• We believe that the results of our study will
  show that men and women are effected equally by
  the Calfit 1 program
• HA M1M2
• HO M1M2
• a 0.05

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Number of Pounds lost by Husbands

• 18
• 16
• 29
• 12
• 9
• 14
• 11

• 13
• 19
• 19
• 24
• 21
• 18
• 15
• 11

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Number of pounds lost by Wives

• 21
• 10
• 18
• 16
• 24
• 30
• 12
• 18

• 18
• 11
• 27
• 11
• 21
• 16
• 15

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Formulas
Mean
Standard Deviation

X Ex
S E(X-X) n
n-1
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Results for Husbands

• Mean 16.6
• Standard Deviation 5.45
• number 15

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Results for Wives

• Mean 17.87
• Standard deviation 5.93
• number 15

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Difference in pounds lost by couples

• d
• -3
• 6
• 11
• -4
• -13
• -16
• -1

• -5
• 1
• 8
• -3
• 10
• -3
• -1
• -4

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Difference

• Mean -1.13
• Standard deviation 7.62
• number 15

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Formulas
t d degrees of
Freedom Sd n df n-1
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Calculations

• t -1.13 / 7.62
• 15
• t -1.13 / 1.97
• t -0.57

• df 15 - 1
• df 14

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T- value on Normal Curve
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English Conclusion

• HO M1M2
• HA M1M2
• There is no significant difference between the
  number of pounds lost, by husbands or wives on
  the, on the Calfit 1 program at the same time.

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Further Studies

• Test whether there is a significant difference
  between the amount of weight lost without the
  Calfit 1 program and with the Calfit 1 program.
• Test to see if the Calfit 1 program is as equally
  successful for all age groups.