PLease make sure you know the corract answer and answer the three questions 1-Bl

Question

PLease make sure you know the corract answer and answer the three questions

1-Blood glucose levels were recorded for all males over the age of 40, admitted with a diagnosis of coronary artery disease (a total of 755 diagnosed cases). The lowest blood glucose level recorded was 58 and the highest, 442. Using a class interval size of 25, set the score limits for each interval........

2-- A total of 320 patients were treated at a clinic in the past year for sexually transmitted infections (STIs). Excluding 32 cases that resulted from congenital transmission or sexual abuse, construct the limits for a frequency distribution of the remaining cases (288), if the oldest patient was 88 and the youngest 12 years of age........

3-The age of all patients diagnosed with cancer during the past year (255 new cases) was recorded. The youngest patient was 3 years old and the oldest was 92. Determine the number of class intervals......

Explanation / Answer

1) (upper limit-lower limit)/class interval

=(442-58)/25

=15.36

=16

Score limit for each class is 16

2) (88-12)=76

288/76=4

3)255/89=2.86=3

The number of class interval is 3

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