Suppose there are only five students in BUS 172 statistics class and the midterm-I scores of these five students are: 19, 21, 18, 22 and 20. Let x denote the score of a student. a) Write the population probability distribution of x. b) List all possible samples of size two that can be selected without replacement. Calculate the mean for each of these samples. Write the sampling distribution of x̅ (sample mean). c) Calculate the mean for the population data. Select one random sample of size two and calculate the sample mean x̅. Compute the sampling error.
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Suppose there are only five students in BUS 172 statistics class and the midterm-I scores of these five
students are: 19, 21, 18, 22 and 20. Let x denote the score of a student.
a) Write the population probability distribution of x.
b) List all possible samples of size two that can be selected without replacement. Calculate the
mean for each of these samples. Write the sampling distribution of x̅ (sample mean).
c) Calculate the mean for the population data. Select one random
calculate the sample mean x̅. Compute the sampling error.
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