Explanation

Mode = 11, Mean = 12

Using:

Mean - Mode ≈ 3(Mean - Median)

12 - 11 = 3(12 - Median)

1 = 36 - 3Median

3Median = 35

Median = 35/3

= 11.67

Explanation

When class frequencies vary widely, weighting each class by its frequency gives a more accurate central tendency.

Weighted mean accounts for differences in data distribution across classes.

Explanation

Compound interest (CI) is always more than simple interest (SI) when interest is calculated more than once or for multiple periods.

This is because CI earns interest on both principal and accumulated interest.

The difference between CI and SI increases with higher rates and longer time periods.

Explanation

Total balls = 4 + 5 + 1 = 10

Red balls = 4

Probability = 4/10 = 2/5

Explanation

Numbers in order: 5, 7, 12, 18, 20

Middle value (3rd number) = 12

Explanation

The formula for calculating the profit margin is:

Profit Margin = (Net Income / Revenue) * 100

Additional information:

The formula for calculating the gross profit margin is:

Gross Profit Margin = (Revenue - Cost of Goods Sold) / Revenue * 100

Explanation

The internal rate of return stands for IRR

It is the interest rate (also known as the discount rate) 

The IRR rule is used as a guideline for deciding whether to proceed with a project

Explanation

To determine the selling price, we can use the formula:

Selling Price = Cost of Goods Sold (COGS) + Gross Profit

In this case,

the COGS is RS 120

and the gross profit is RS 80.

So, the selling price would be:

Selling Price = RS 120 + RS 80

Selling Price = RS 200

Explanation

The financial metric that measures the efficiency of a company's use is ROI

ROI stands for Return on Investment

formula:

ROI = (Net Income / Initial Investment) * 100

Explanation

NPV is the difference between the present value of cash inflows and cash outflows over a period of time.

NPV stands for Net present value

It is used in capital budgeting and investment planning 

formula:

NPV = Cash Inflow Year 1 / (1 + Discount Rate)^1 + Cash Inflow Year 2 / (1 + Discount Rate)^2 + ... + Cash Inflow Year n / (1 + Discount Rate)^n - Initial Investment