Two drugs were tested to see whether they helped women with breast cancer. of 1060 women about half were randomly assigned to drug A and the other half were assigned to drug B. After 77 months 473 out of 539 and 426 out of 521 women assigned to drugs A and B respectively were alive. The survival rate for drug A is _____ %. The survival drug for drug B is ____%
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.
Two drugs were tested to see whether they helped women with breast cancer. of 1060 women about half were randomly assigned to drug A and the other half were assigned to drug B. After 77 months 473 out of 539 and 426 out of 521 women assigned to drugs A and B respectively were alive.
The survival rate for drug A is _____ %. The survival drug for drug B is ____%
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