Question

A frequency distribution has first two classes as 15.2 to 15.4 & 15.5 to 15.7. Real limit of the first class is

Answer 1

Answer:

The correct answer is (d) 15.15 to 15.45

Step-by-step explanation:

From the above question,

A frequency distribution has first two classes as 15.2 to 15.4 & 15.5 to 15.7. Real limit of the first class is

(a) 15.3 to 15.6

(b) 15.05 to 15.55

(c) 15.25 to 15.45

(d) 15.15 to 15.45

The upper class limit for the first class is 30 and the lower class limit for the second class is 31.

To find the class limits, apply the formula – lower class limit = class mark - class size2 and upper class limit = class mark + class size2 . Using these two formulas find the class limits and upper-class limits as intervals to determine the true class limits.

Corresponding to a class internal, the class limits may be defined as the minimum value and the maximum value the class interval may contain. The minimum value is known as the lower class limit (LCL) and the maximum value is known as the upper class limit (UCL) Ex.

Hence the real limit of the first class is 15.15 to 15.45

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Answer 2

15.15 to 15.45

Here, according to the given information, we have,

The first two classes in a frequency distribution are 15.2 to 15.4 and 15.5 to 15.7.

For the first class, the upper class limit is 30, while for the second class, the lower class limit is 31.

Use the formulas lower class limit = class mark - class size2 and upper class limit = class mark + class size2 to get the class limitations. Find the class limits and upper-class limits as intervals using these two formulas to ascertain the actual class limits.

The minimum value and the maximum value that the class interval may include can be defined as the class limits in relation to a class interval. The lower class limit (LCL) is the lowest value, and the upper class limit is the highest amount (UCL).

Hence, 15.15 to 15.45 is the actual first class cutoff time.

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