Exercise 22.6. (a) The linear system in Exercise 22.1(b) has left side Lx for 2 0 0 -5 12 -4 6 1 Compute L and check that your answer is correct by multiplying it against L to confirm that you get I3 (you just need to multiply it against L on one side or the other, not both) b2(i.e. b with x = (b) Use your answer to (a) to give a general solution to Lx X2and b express each xi in terms of the b;'s). Check that when b is as given on the right side of the linear system in Exercise 22.1 (b), your general solution recovers the one found in Exercise 22.1(b)

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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.