Free Borno civil service Past Questions and Answers

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Most likely, the Borno civil service screening and aptitude test usually are repeated questions from the previous exam. So if you are confused about the way the Borno civil service Examination is conducted, you should read through this publication and see some of the samples we have been able to get from past Borno civil service recruitment past questions and answers.

These Free Borno civil service Past Questions and Answers contain a collection of sample past questions and answers that you can use for studying for your upcoming Borno civil service exam. We pulled this Borno civil service Past Questions and Answers from our study pack Borno State civil service Practice questions and answers

Each sample question includes correct answers, so you can see how to crack it!

Free Sample Borno civil service Past questions and answers

The arithmetic mean of all possible outcomes is known as
(A) expected value
(B) critical value
(C) variance
(D) standard deviation

Answer: A

Expectation (or expected value) is the arithmetic mean of all possible outcomes of a random variable.

2. Which of the following cannot be the value of a correlation coefficient?
(A) –1
(B) –0.75
(C) 0
(D) 1.2

Answer: D

The value of a correlation coefficient is always between –1 and 1, including –1 and 1.

3. Var (X) = ?
(A) E[X²] (B) E[X²] – E[X] (C) E[X²] + E[X]²
(D) E[X²] – E[X]²

Answer: D

By definition, Var (X) = E[X²] – E[X]²

4. Var (X + Y) = ?
(A) E[X/Y] + E[Y] (B) E[Y/X] + E[X] (C) Var(X) + Var(Y) + 2 Cov(X, Y)
(D) Var(X) + Var(Y) – 2 Cov(X, Y)

Answer: C

By definition, Var (X + Y) = Var(X) + Var(Y) + 2 Cov(X, Y)

5. What is variance of the data set: 2, 10, 1, 9, and 3?
(A) 15.5
(B) 17.5
(C) 5.5
(D) 7.5

Answer: B

First calculate the mean
Now calculate the variance,

ENGLISH

1. Tunde and Tania went shopping, but __________ couldn’t find anything __________ liked.
(A) they, those
(B) they, them
(C) those, they
(D) they, they

The answer is: (D)

2. Nuclear energy is __________ dangerous to be used widely.
(A) so
(B) such
(C) too
(D) that

The answer is: (C)

3. If I have money, I __________ it tomorrow.
(A) will purchase
(B) would purchase
(C) have purchase
(D) have purchased

The answer is: (A)

4. Cannon had __________ unique qualities _________ it was used widely in ancient times.
(A) such, that
(B) such, so
(C) that, since
(D) that, that

The answer is: (A)

GENERAL

1. The oldest news agency in the world is
(A) AFP
(B) WAFA
(C) BBC
(D) CNN

The answer is: (A)

2. AFP is a renowned news agency of which country?
(A) Switzerland
(B) France
(C) Germany
(D) Sweden

The answer is: (B)

3. How many electoral votes are required in the US presidential elections to become president of the United States?
(A) 250
(B) 270
(C) 350
(D) 370

The answer is: (B)

4. Currently, the largest economy in the world is the economy of
(A) China
(B) Russia
(C) Germany
(D) United States

The answer is: (D)

5. Which state of the United States shares marine border with Russia?
(A) Florida
(B) Hawaii
(C) Georgia
(D) Alaska

The answer is: (D)

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