Identify the two unknown frequencies in the following table if the mean of the values is 21.5? The following data shows the class and frequency distribution:Class and Frequency Table
Class / वर्ग 0-10 10-20 20-30 30-40 Frequency / आवृत्ति f1 12 f2 8 Total / कुल 40
5 and 15
To find the unknown frequencies, we use the formula for the mean of a frequency distribution. By solving the equations, we find that the correct frequencies for the unknown values are 5 and 15. Therefore, option 1, "5 and 15," is the correct answer.
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