Question

2. The class interval for a continuous variable are 0-99, 100-199, 200-299, 300-399. What is the mid value of third class?

(a) 249.5 (b) 250 (c) 299.5 (d) 199.5


3. All the observations in the data are of same value 7. What will be their mode?

(a) 8 (b) 7 (c) 14 (d) 28

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Answer 1

Answer:

2.

(a) 249.5

$= \frac{lower \: class \: limit \: + upper \: class \: limit}{2}$

$= \frac{200 + 299}{2}$

$= \frac{499}{2}$

$= 249.5$

2.

(b) 7

Because as all the values are 7, 7 appears most times.