BHS 220 Introduction to Hypothesis Testing

Statistics

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Question 1

The data below represents daily water intake five days in glasses and ounces. Each glass of water is estimated to hold 8 ounces of water.

Table – daily intake of water in glasses and ounces

The mean is calculated by dividing the total number of glasses taken during the five days period divided by the number of the days. The mean of glasses of water taken during the five days period is 4 glass and the mean ounces contained in four glasses is 32 eight ounces. Subsequently, the median and mode of the data are equal. The standard deviation of glasses taken daily is 0.71 from the mean. This means that the normal daily intake of water is over three glasses to less than five glasses in a day. It is true due to the fact that daily water intake depends on the weather and the health condition of an individual. On the other hand, the ounces taken in a day tend deviates from the mean of 32 ounces by 5.66. Also, it is true since the standard deviation of daily water intake is less than one glass.

Question 2

The mean is the best measure of central tendency from the above because a related sample from the same population tends to have similar means (Jankowski & Flannelly, 2015). Also, the weighted mean assigns weigh to variables which minimize the effects of the outliers. The technique assigns weight to the glasses of water taken to reflect their significance in the results. Therefore, the calculated mean reflects the importance of each glass of water taken. Also, it takes account of uneven representation in the data to reflect a more balanced and similar interpretation of the importance of water in the human body. Finally, the mean assumes that each glass of water taken is equally important provided that it is taken within normal range.

Question 3

The data represent a normal distribution since the standard deviation shows the number of glasses of water and ounces taken every day is concentrated around the mean. A small deviation of 0.7 glasses of water shows that the data is concentrated around the mean of 4 glasses. On the other hand, the standard deviation of ounces shows that daily water intake deviates from the mean of 32 ounces by 5. 66ounces. Therefore, the number of ounces taken daily concentrated around the mean. Both the number of glasses of water and ounces are distributed around the mean.

Question 4

According to the American Heart Association, the use of birth control pills increases blood pressure in women. The study shows that overweight women are more vulnerable to increased blood pressure due the use of the contraceptives (“American Heart Association,” 2016). Also, the users of the contraceptives have higher chances of suffering from high blood pressure if they have a family history of the condition (“American Heart Association,” 2016). Finally, the study shows that women who had high blood pressure during their last pregnancy are more likely to experience the condition again after the use of the birth control pills.

References

American Heart Association. (2016, December 14). High Blood Pressure and Women. Retrieved from American Heart Association: http://www.heart.org/HEARTORG/Conditions/HighBloodPressure/UnderstandSymptomsRisks/High-Blood-Pressure-and-Women_UCM_301867_Article.jsp#.WmStS1mgfMw

Flannelly, K. J. (2015). Measures of Central Tendency in Chaplaincy, Health Care, and Related Research. PubMed, 21(1), 39-49. doi:10.1080/08854726.2014.989799