Listed below are pulse rates (beats per minute) from samples of adult males and females. Find the mean and median for each of the two samples and then compare the two sets of results. Does there appear to be a difference? Male: Female: 87 85 90 59 97 57 77 54 78 52 70 64 75 90 93 82 74 72 57 61 53 66 70 85 89 92 76 91 68 91 Find the means. The mean for males is beats per minute and the mean for females is beats per minute. (Type integers or decimals rounded to one decimal place as needed.) Find the medians. The median for males is beats per minute and the median for females is (Type integers or decimals rounded to one decimal place as needed.) beats per minute. Compare the results. Choose the correct answer below. O A. The mean and median appear to be roughly the same for both genders. O B. The mean and the median for males are both lower than the mean and the median for females. OC. The mean is lower for males, but the median is lower for females. O D. The mean and the median for females are both lower than the mean and the median for males. O E. The median is lower for males, but the mean is lower for females. Does there appear to be a difference? O A. The pulse rates for males appear to be higher than the pulse rates for females. O B. There does not appear to be any difference. OC. Since the sample size is small, no meaningful information can be gained from analyzing the data. O D. The pulse rates for females appear to be higher than the pulse rates for males.
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.
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