Question

Find the arithematic mean by direct method 200,250,300,350,400,450,500.​

Answer 1

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→Find the arithmetic mean by direct method

200,250,300,350,400,450,500

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⇒Given:

• fixi = 200,250,300,350,400,450,500
• fi = 7

⇒To Find:

• Mean of the Observation

⇒Solution:

⇒$Mean=\frac{\sum fixi}{\sum fi}$

⇒$\frac{2450}{7}$

⇒$\huge{\pink{\overbrace{\underbrace{Mean = 350}}}}$

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Answer 2

The arithmetic mean is the simplest and most widely used measure of a mean, or average. It simply involves taking the sum of a group of numbers, then dividing that sum by the count of the numbers used in the series. For example, take 34, 44, 56 and 78. The sum is 212. The arithmetic mean is 212 divided by four, or 53.