The data is grouped into class intervals if the frequency table becomes too large to help us organise, interpret and analyse the data. The frequency of a class interval is the number of data values that fall in the range specified by the interval. The size of the class interval is often selected as 5, 10, 15 or 20 etc.
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Answer:
C.5 n=50x5=5¹
Step-by-step explanation:
The data is grouped into class intervals if the frequency table becomes too large to help us organise, interpret and analyse the data. The frequency of a class interval is the number of data values that fall in the range specified by the interval. The size of the class interval is often selected as 5, 10, 15 or 20 etc.