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STAT 106  Biostatistics

Colleges of medicine

Syllabus :

Descriptive statistics –Measure of location and dispersion – Elementary probability –Random variable and probability distribution-Central limit theorem and application.

Text book:

Elementary Biostatistics with Applications

From Saudi Arabia

By : Dr.Nancy A.Eyink Hasabelnaby

 Exames: Grade First   midterme 25 % Second midterme 25% Final exam 50% Total 100%

Home works :

Q1For each the following ,indicate the variable, whether the variable is qualitative or quantitative ,the population, and the sample size.

a)     For a sample of 15 mice, we measure the length of time (in minutes ) it takes a mouse to perform a certain task after a period of training .

Variable: length of time(quantitative)   ,

Population: mice   , Sample size: 15 mice.

b)    For a sample of 49 cars in Saudi Arabia ,we measure the color of the car

Variable: The color of the car (qualitative)   ,

Population: cars in saudi arabia   , Sample size: 49 cars.

c)      Suppose we measure the temperature for the a sample of 25 animals having a certain disease .

Variable: Tempreture of animals having a certain disease (quantitative)   ,

Population: animals having a certain disease

Sample size: 25 animals having a certain disease .

Q2:   The following stem and leaf represents the age of women  when having their first baby.

Answer the following questions

 Frequency    Stem &  Leaf 8.00         1 .  56678899 16.00        2 .  0001112233333444 14.00        2 .  55555558888999 21.00        3 .  000000111111222333344 12.00        3 .  555566677889 4.00         4 .  0013 Stem width:     10.00 Each leaf:        1 case(s)

1)The number of women with age more than 30 when having their baby is

(a)16  (b) 37 (c) 31 (d)15  (f) none of these

2)The percentage of women with age Less than 26 when having their baby is

(a)  32%    (b)  41.33% (c)  50.67%  (d) 44.29%  (e)  31%      (f) none of these

3)The range is

(a)  23    (b)  28   (c)  17   (d)  2  (e)  30    (f) none of these

4) The mode is

(a) 25,30     (b) 21     (c)31     (d)  5     (e) 25      (f) 30,31

(g) none of these

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Model of final exam 106سناء عبدالله عبدالرحمن ابونصره
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