1.

The mean of the following distribution is 6, where p is unknown.Value3456789Frequency1476p31The distribution has(a) median 6 and mode 5(b) median 6 and mode 7(c) median 5 and mode 5(d) median 7 and mode 7

Answer»

Correct option: (b) median 6 and mode 7

Explanation: 

123 + 7p = 6(22 + p). This implies p = 9

Value3456789
Frequency1476931
Cum freq151218273031

Total frequency = 31. Mode = 7, Median = 16th observation = 6.



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