WEBVTT
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The data shows the classification that 40 students received for their homework.
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By forming a frequency table, determine the most common classification.
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So to solve this question, the first thing you need to do is draw up our frequency table.
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So here’s our frequency table.
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What I’ve got across the top is the classification, so we’ve got pass, good, very good, and excellent.
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Downside, I have tally and frequency.
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I’ve included tally because it’ll be very useful when we’re counting up the different classifications that we have.
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So I’m gonna start by tallying up the passes.
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And to do this what I’m gonna do is do each row at a time, being very careful to make sure that I don’t miss any.
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So I’ve got one pass in the first row, so I draw one vertical stick, then three in the second row, so I now add three vertical sticks.
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And then I’ve got one in third row, so what I do now is add a diagonal line.
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And I do this because we had four vertical sticks or vertical lines, so the fifth one is always diagonal.
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So then in the fourth and final row, I have three more passes, so I add these on as three more vertical sticks or vertical lines.
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So now I move onto good, and I’ve got three goods in the first row.
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Then I have one in the second row, three in the third row, which means I’ve added one diagonal line, and then two vertical lines for three.
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And again it’s because we’ve reached four, so five, and then add two more.
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So in the fourth row, we have three more goods.
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So what I do that I add two more vertical lines and one more diagonal line.
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So now we’re gonna move to very good.
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We’ve got two of these in the first row, and then we’ve got three in the second row.
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So we’re gonna have to add two vertical lines and one diagonal line.
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And then we have three more in the third row, and then finally one in the fourth row.
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So now we can move on to our final classification, which is excellent.
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So we start with four excellents in the first row, three in the second row, three in the third row, and then finally in the final row we have three more.
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So now we finish tallying up our classifications, we can count how many we’ve got of each of them.
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So we take a look at pass; we have eight; good, we have 10; very good, we have nine; and excellent, we have 13.
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Now what we can do now to make sure that we haven’t missed any out and recorded everything properly and our tally is add up how many this makes.
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Well when we add them up, we get 40 because eight plus 10 is 18 plus nine is 27 plus 13 is 40.
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So we knew that there were 40 students, so we know we haven’t missed any out.
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So that means we’ve completed the first part of the question which is to form a frequency table.
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Now what we need to do is determine the most common classification.
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Well if we look at our frequency table, we can see that excellent has 13 students, so this will be the most common.
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So therefore, we can say that by using our frequency table we can see the excellent is the most common classification.