Step 3 e Construct frequency distribution and keep a tally of the number of measurements falling in a each interval Department of Health Statistics
Construct frequency distribution and keep a tally of the number of measurements falling in a each interval. Department of Health Statistics Step 3
Step 3 Cholesterol Your attention each class interval include (mmol/L) the lower limit(L), but not the upper 4.0-4.5 4.5-5.0 limitU) 5.0-5.5 5.5-6.0 For example, there is a data of 5.5,it 6.0-6.5 6.5-7.0 should be in the forth group 7.0-7.5 7.5-8.0 Department of Health Statistics
Your attention: Each class interval include the lower limit (L), but not the upper limit (U). For example, there is a data of 5.5, it should be in the forth group. Department of Health Statistics Step 3 Cholesterol (mmol/L) 4.0-4.5 4.5-5.0 5.0-5.5 5.5-6.0 6.0-6.5 6.5-7.0 7.0-7.5 7.5-8.0
Upper limit Table 1.3 frequency distribution table for serum total cholesterol Cholestero Cumulative mark Frequency percentage (mmolL percentage 4.0-4.5 2% 2% 4.5-5.0 124 6% 5.0-5.5 8% 14% 5.5-6.0 22% 36% 60-6.5||111 22% 58% 6.5-7.0 22% 80% 7.0-7.5 14 94% 72-8.0 3 100% total SO Percentage is frequency divided by sample size(5o) Lower limit Department of Health Statistics
Department of Health Statistics Lower limit Cholesterol (mmol/L) mark Frequency percentage Cumulative percentage 4.0-4.5 | 1 2% 2% 4.5-5.0 || 2 4% 6% 5.0-5.5 |||| 4 8% 14% 5.5-6.0 ||||| ||||| | 11 22% 36% 6.0-6.5 ||||| ||||| | 11 22% 58% 6.5-7.0 ||||| ||||| | 11 22% 80% 7.0-7.5 ||||| | | 7 14% 94% 7.5-8.0 ||| 3 6% 100% total 50 100% Upper limit Table 1.3 frequency distribution table for serum total cholesterol Percentage is frequency divided by sample size(50)
8 6 Std. Devy=.76 0 4.254.755.255.756.256.757.257.75 Serum Cholesterol Fig 1.2 frequency distribution graph for serum total cholesterol Department of Health Statistics
Department of Health Statistics Serum Cholesterol 4.25 4.75 5.25 5.75 6.25 6.75 7.25 7.75 frequency 12 10 8 6 4 2 0 Std. Dev = .76 Mean = 6.29 N = 50.00 3 7 11 11 11 4 2 1 Fig 1.2 frequency distribution graph for serum total cholesterol
Serum Cholesterol number of ma jors The difference 5000 4000 3000 2000 1000 Department of Health Statistics
Department of Health Statistics Serum Cholesterol 4.25 4.75 5.25 5.75 6.25 6.75 7.25 7.75 frequency 12 10 8 6 4 2 0 Std. Dev = .76 Mean = 6.29 N = 50.00 3 7 11 11 11 4 2 1 number of majors 0 1000 2000 3000 4000 5000 engineering arts and sciences agriculture education The difference