Explanation

Demography is the statistical study of the human population, including aspects such as size, structure, distribution, and dynamics.

It examines factors like birth and death rates, migration, age, sex, and occupation, among others.

انسانی آبادی کا شماریاتی مطالعہ ڈیموگرافی کہلاتا ہے۔

Explanation

"My mother is the sister of your brother."

If your brother has a sister, that sister is also your sister.

So:

My mother is your sister.

That means you are my uncle or aunt (depending on gender).

So, I am your nephew (assuming I'm male).

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ND04-12-2022

ND23-6-2023

Explanation

Total number of balls = 6 black + 8 white = 14 balls

Number of white balls = 8

Probability of drawing a white ball = Number of white balls / Total number of balls

= 8/14

= 4/7

So, the probability of drawing a white ball is 4/7.

Explanation

The standard deviation of a binomial distribution is indeed √npq, where:

• n is the number of trials
• p is the probability of success
• q is the probability of failure (q = 1 - p)

The formula for the standard deviation of a binomial distribution is:

σ = √npq

This represents the spread or dispersion of the distribution.

Explanation

An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space.

AGM 25-12-2022

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RY12-02-23

Explanation

Mode is the value that appears most frequently in a data set.

It represents the highest frequency among all values.

Explanation

A sequence is arithmetic if the common difference of all terms of a sequence is the same.

A sequence is geometric if the common ratio of all terms of sequence is the same.

A common difference is the difference between consecutive numbers in an arithmetic sequence

Sh14-8-2023

Explanation

A pie graph (or pie chart) is divided into sectors, where each sector represents a part of the whole.

The size of each sector corresponds to the proportion of the category it represents.

Explanation

This is an arithmetic sequence with common difference of 3.

The first element is 1, and total elements are 101. So, a1 = 1, d = 3 and n = 101.

Therefore, by using the formula of nth term of an arithmetic sequence, we have 301 .

Explanation

When a coin is flipped, there are two possible outcomes: heads (H) or tails (T).

The probability of getting a head is the number of favorable outcomes (getting a head) divided by the total number of possible outcomes:

Probability = Number of favorable outcomes / Total number of possible outcomes

= 1 (head) / 2 (head or tail)

= 1/2