जिसको आता है सिर्फ वही आंसर दे Fine the size of class internal 0-15,15-30etc. a)10b)7.5c)15d)30 About the author Sarah
Answer:
the size of class interval is 15-0 = 15
The size of class interval is (15-0 =15)
Therefore, the correct answer is (c) part