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you explain how to solve this question? If there is an equation that I can use will be appreciated.
70% of students answered question A correctly, 55% of students answered question B correctly, 20% of students answered neither question correctly. What is the percentage of students answered both question A and B correctly?
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What does SP mean in statistics?
statistical parodies
What is Xi in statistics?
In statistics, Xi represents an individual data point or observation within a dataset. It is commonly used to denote the ith data point in a sequence of data. The subscript i is used to differentiate between different data points in the dataset, with i typically ranging from 1 to n, where n is the total number of data points. Xi is a fundamental concept in statistical analysis and is essential for calculating various statistical measures and conducting data analysis.
What statistical concept is used to explain the natural difference that exists between a sample mean and corresponding population mean?
Random error.
What does the z score of 1.3 mean?
It means that there is a probability of 0.0968 that an observation as extreme as this occurred purely by chance.
What is t Test?
t-test is the statistical test used to find the difference of mean between two groups
