Frequency table of 2, 3, 3, 1, 2, 3 Easy

The question

Question: make a frequency table of 2, 3, 3, 1, 2 and 3.

The frequency of a number is how many times it comes.

1 List the values

We write each value once, smallest first: 1, 2 and 3.

2 Tally

Careful!

Cross out each number as you count it.

Then none is missed, and none is counted twice.

The first number is 2.

We cross it out, and put one mark next to 2.

Next is 3: one mark next to 3.

And so on: one mark for each number.

Every number is crossed out.

So every number has its mark.

3 Count

1 has 1 mark: f = 1.

2 has 2 marks: f = 2.

3 has 3 marks: f = 3.

4 Check

Let's check.

We add the f column: 1 + 2 + 3 = 6.

There are 6 numbers in the list.

Every one is counted.

So it is right!

Let's look back.

First: list the values.

Then: tally.

Then: count.

Last: check.

▶ Watch it solved

Frequency table of 4, 6, 5, 4, 6, 6, 3, 5, 6, 6, 4 Medium

The question

Question: make a frequency table of 4, 6, 5, 4, 6, 6, 3, 5, 6, 6 and 4.

The frequency of a number is how many times it comes.

1 List the values

We write each value once, smallest first: 3, 4, 5 and 6.

2 Tally

Careful!

Cross out each number as you count it.

Then none is missed, and none is counted twice.

The first number is 4.

We cross it out, and put one mark next to 4.

Next is 6: one mark next to 6.

And so on: one mark for each number.

The fifth mark goes across the other four.

That makes a group of 5, easy to count.

Every number is crossed out.

So every number has its mark.

3 Count

3 has 1 mark: f = 1.

4 has 3 marks: f = 3.

5 has 2 marks: f = 2.

6 has 5 marks: f = 5.

4 Check

Let's check.

We add the f column: 1 + 3 + 2 + 5 = 11.

There are 11 numbers in the list.

Every one is counted.

So it is right!

Let's look back.

First: list the values.

Then: tally.

Then: count.

Last: check.

▶ Watch it solved

Frequency table of 3, 1, 4, 1, 5, 2, 6, 5, 3, 5, 1, 4, 5, 2, 5 Harder

The question

Question: make a frequency table of 3, 1, 4, 1, 5, 2, 6, 5, 3, 5, 1, 4, 5, 2 and 5.

The frequency of a number is how many times it comes.

1 List the values

We write each value once, smallest first: 1, 2, 3, 4, 5 and 6.

2 Tally

Careful!

Cross out each number as you count it.

Then none is missed, and none is counted twice.

The first number is 3.

We cross it out, and put one mark next to 3.

Next is 1: one mark next to 1.

And so on: one mark for each number.

The fifth mark goes across the other four.

That makes a group of 5, easy to count.

Every number is crossed out.

So every number has its mark.

3 Count

1 has 3 marks: f = 3.

2 has 2 marks: f = 2.

And the same for the rest.

4 Check

Let's check.

We add the f column: 3 + 2 + 2 + 2 + 5 + 1 = 15.

There are 15 numbers in the list.

Every one is counted.

So it is right!

Let's look back.

First: list the values.

Then: tally.

Then: count.

Last: check.

▶ Watch it solved