The mean of marks of class95 - 100 isa)100b)95.5c)97.5d)95Correct answ...
Mean is the midpoint of the upper and lower limits.
So for the given problem; the mean is
[(95+100)÷2] = 97.5
Thus class mark is 97.5
So option C is the correct answer.
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The mean of marks of class95 - 100 isa)100b)95.5c)97.5d)95Correct answ...
Understanding the Problem
To find the mean of the marks from a class that ranges from 95 to 100, we take the set of numbers from 95 to 100, which is:
- 95
- 96
- 97
- 98
- 99
- 100
Calculating the Mean
The mean (average) is calculated using the formula:
Mean = (Sum of all values) / (Number of values)
Step 1: Summing the Values
- Add all the marks together:
- 95 + 96 + 97 + 98 + 99 + 100 = 585
Step 2: Counting the Values
- Count the number of marks:
- There are 6 values (95, 96, 97, 98, 99, 100).
Step 3: Final Calculation
- Now, substituting these values into the mean formula:
- Mean = 585 / 6 = 97.5
Conclusion
Thus, the mean of marks from 95 to 100 is 97.5, confirming that option 'C' is correct.
Key Takeaway
- The mean is a representation of the central tendency of a set of numbers.
- In this case, the calculation of the mean gives us a clear average of the class marks, demonstrating a simple yet effective method for statistical analysis in exam preparation.
The mean of marks of class95 - 100 isa)100b)95.5c)97.5d)95Correct answ...
Mean is the midpoint of the upper and lower limits.
So for the given problem; the mean is
[(95+100)÷2] = 97.5
Thus class mark is 97.5
So option C is the correct answer.