1.

Arrange the given data in ascending order21,25,24,26,28,19,30,27,29,21a. Find the range of the data.b. Find the mean of the data.

Answer»

a) range = largest no. - smallest no. = 30 - 19 = 11b)mean = sum of observations /no. Of observations = (21+25+24+26+28+19+30+27+29+21) /10 = 250/10 = 25



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