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People use Two-Way Tables to examine the relationship between two categorical variables.
Example Question
Megan has collected information from people in her year group about which science people prefer. Complete the two-way table to show her information.
Biology Chemistry Physics Total
Girls 20 15 50 (20 for Biology, 15 for Chemistry and 50 is the total)
Boys
Total 40 33 100 ( 40 for Biology, 33 for Chemistry and 100 is the total)
First, we can work out how many boys were asked in the survey. To do this, we
take the number of people asked (100) away from the number of Girls asked (50). 100-50 = 50. 50 boys were asked in the survey.
We can work out that 27 people like Physics because 40 + 33 = 73
100 - 27 =73. From there we can see that 12 boys like physics since 15 girls like Physics. 15 + 12 = 27.
Next, we can see that 20 boys like Biology since 20 girls like Biology and
20 + 20 = 40.
To work out how many girls like Biology, we add up the total of girls that preferred Biology (20) and the total of Girls that like Physics (15), add them together and work out what we need to add to the total (35) to make the total of 50. In this case, it's 15. So 15 girls like Chemistry.
We can see that 18 Boys like Chemistry since 33 - 15 = 18.
So this is what your completed Two-Way table should look like:
Biology Chemistry Physics Total
Girls 20 15 15 50
Boys 20 18 12 50
Total 40 33 27 100
You will then be asked questions from this table like:
' How many Girls were in the survey?' (50)
' How many Girls prefer Biology?' (20)
' What is the difference between the total of Boys who prefer Chemistry and the number of Boys who prefer Physics?'(6)
What else can I help you with?
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The Periodic Table of Elements
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The table used for mass is called a scale or a balance. It is used to measure the weight of an object by comparing it to known weights.
What is the table used for mass?
The table used for mass is called a balance or a scale. It is a device that measures the mass of an object by comparing it to known weights.
What is table assessories?
Table accessories are items used to enhance and complement the appearance and functionality of a table. This can include items like tablecloths, napkins, centerpieces, place mats, and table runners. These accessories are often used to set the mood for a dining experience or event.
What is the purpose of an occasional table and how did it get its name?
There is no specific purpose to an occasional table and that is how they got the name. It is a small table like a coffee table but can be used for almost any purpose depending on the occasion or need. They can be folded or put away and just used when the occasion is right.
Does a sea sponge have a oneway or a twoway digestive system?
Neither. A sea sponge uses diffusion for getting its nutrients.
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Which option is used to format table?
table only
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An INSERT query is used to add a row to a table.
What is an occasional table when it is not being used?
a table downwind of a drunk
Where can one purchase a twoway radio?
There are many different locations in which someone can purchase two-way radios. The best retail store to use is Walmart. The best online store to use is Amazon.
In VB.NET what method is used to modify a table?
SQL UPDATE statement is used to modify a record in a table.
What is the periodic table of elements used for?
The "Periodic Table of Elements" is used for classifying the elements, and to know which one is which.
What emotion is used in table tennis?
the main emotion used in table tennis is anger basically aggression
How the periodic table is and how it is used?
Periodic Table is expressed as rows and columns. It is used by locating the position of element.
