The objectives of a study were to describe the menopausal status, menopausal symptoms, energy expenditure, and aerobic fitness of healthy midlife women and to determine relationships among these factors. Among the variables measured was maximum oxygen uptake (VO2max). The mean VO2max score for a sample of 242 women was 33.3 with a standard deviation of 12.14. We wish to know if, on the basis of this data, we may conclude that the mean score for a population of such women is greater than 30.
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
The objectives of a study were to describe the menopausal status, menopausal
symptoms, energy expenditure, and aerobic fitness of healthy midlife women and to determine
relationships among these factors. Among the variables measured was maximum oxygen uptake
(VO2max). The mean VO2max score for a sample of 242 women was 33.3 with a standard deviation
of 12.14. We wish to know if, on the basis of this data, we may conclude that the mean score for
a population of such women is greater than 30.
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