Question

Ex-3)
The number of tally marks count for
each value on a group is called:
(a) class limit (b) class width (c) Class boundary
(d) Frequency​

Answer 1

(d) Frequency

The number of tally marks count for each value on a group is called Frequency.

More information:

• To count using tally marks, we draw them one by one and when it is 5, we cut four tallies with another straight line. That expresses 5.

• Later we count them as Frequency.

• We use total Frequency to find Mean, Median and Mode.

• In general, we write Frequency as f and total Frequency as N or Σf.

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Answer 2

Answer:

The number of tally marks count for each value on a group is called: frequency.

Explanation:

Tally marks :

When the data is large, it may not be easy to count. So, we make use of tally marks. Tally marks is the quick way of recording the given data by grouping in bunches of five. The first four tallies are marked vertically and the 5th tally in a bunch is marked diagonally across the four tallies.

To count the number of times a value of the variable appears in a collection of data, we use tally mark ( / ). Thus tally mark represents frequency. The first four tallies are marked vertically and the 5th tally in a bunch is marked diagonally across the previous four.

So basically they are used to count the number of entries in a single class which in turn represents the frequency of that class.