The class marks of a continuous distribution are 1.04, 1.14, 1.24, 1.34, 1.44, 1.54, and 1.64. Is it true that the last interval will be 1.55 - 1.73?

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True

False

answer is B.

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Detailed Solution

Given the class marks of a continuous distribution are: 1.04, 1.14, 1.24, 1.34, 1.44, 1.54, and 1.64.
The difference between two successive classes equals the class size.
1.14 - 1.04 = 0.1, 1.34 - 1.24 = 0.1, 1.54 - 1.44 = 0.1
As a result, the class interval is 0.1. Furthermore, the class size for the class interval 1.55 - 1.73 is 1.73 - 1.55 = 0.18, which is not the same as the class interval 0.1.
As a result, the last 1.55 - 1.73 interval is not the last. As a result, the final interval of 1.55 - 1.73 is incorrect.
Hence, the given statement is false and the correct option is 2.

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