The mean of 5 observations is 25. When a constant ‘x’ is added to each observation, the mean becomes 30. Find the value of x.
Question
Solution 1
Sure, here is the step by step solution:
Step 1: The mean of 5 observations is 25. This means the total sum of these 5 observations is 5 * 25 = 125.
Step 2: When a constant ‘x’ is added to each observation, the mean becomes 30. This means the total sum of these 5 observations now is 5 * 30 = 150.
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