WGU C431: Healthcare Research and Statistics Topic 2- Statistical Method. Questions and answers. 100% Accurate 2024

MEAN - -average MEDIAN - -Middle number standard deviation - -· The average dispersion from the mean- how far apart are the data points from the mean. How spread out your data is within the curve. The lowest it can be is zero. Low standard deviation (More reliable) is data sets are not spread out. High is they are (less reliable). o 99.7% of the data are within 3 standard deviations of the mean. P+ 3a or P-3a o 95% within 2 standard deviations P+2a or P- 2a o 68% within 1 standard deviations p+a or P-a o Mean (average) = P standard deviation curve - -Negative skewed- curve trends to the right Positive skewed- curve trends to the left Normal- mean and median will have the same value- equally distributed P value - -Probability value that we would have seen our data (or something more unexpected) just by chance if the null hypothesis (null value) is true. The probability of achieving your results by chance. · Small p-values mean the null value is unlikely given our data · The p-value that is less than alpha is what we expected. Making the null hypothesis not true- therefore we are rejecting the hypothesis · If the p value is higher than the alpha,