Statistics class

A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 380 babies were​ born, and 323 of them were girls. Use the sample data to construct a 99​%... more

Mean and Percentage

5 million students appeared in an exam.The total marks of the exam were 9.0.Mean score of male candidates: 5.55/9.0Mean score of female candidates: 5.66/9.0How many students or what percentage of... more


How to interpret standard deviation of samples with different means?

Let be two samples collections A and B. Mean of the first is 5 and the second is 15. Standard deviation of the first is 2 and the second is 5. Can we conclude something even though the two... more


How can I graph two sets of data on the same Excel graph?

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