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.
1. What should come next in the series: 77, 78, 75, 80, 73, 82, ....? *
84
71
81
70
2. Look at this series: 3, 9, 27, 90, 243, 729,... One numeral is wrong. What should it be? *
80
79
83
3. In the series 1, 1, 1/2, 1/6, 1/24, ..., determine the 6th term. *
1/74
1/100
1/80
1/120
81
70
4. In the series 1, 1, 1/2, 1/6, 1/24, ..., determine the 6th term. *
1/180
1/100
1/74
1/120
5. A person has 2 parents, 4 grandparents, 8 great grandparents and so on. How many ancestors during the 15 generations preceding his own, assuming no duplication? *
131,070
65, 534
16, 383
6. Find the sum of the infinite geometric progression 6, -2, 2/3, ..... *
7/2
5/2
1 1/2
9/2
7. The 7th term of the geometric progression 2, 6, 18, ... is *
1458
5832
2919
729
8. Find the sum of the first 6 terms of a geometric sequence in which a1 = 5 and r = -2 *
-315
315
-105
-210
5832
2919
729
9. Find the sum of the terms of geometric sequence in which a1 = 162, an = 2/9 and r = 1/3 *
262.89
242.89
242.22
222.89
10. Which of the given sets of numbers is a geometric sequence? *
-4, -8, -12, -16
1, 4, 16, 25, 36
6, 12, 36, 144, 720
8, -4, 2, -1, 1/2, -1/4
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