Mean, Median, Mode Grouped Data

Mean, Median, Mode Grouped Data

(Unit Test 2 Review)

Multiple Choice

What is Xm and n in the formula of the mean for grouped data?

• frequency of the mean class

• Midpoint and total frequency

• Classmark and frequency

• Midpoint and total cumulative frequency

Multiple Choice

What column do we need in calculating the mean for grouped data?

• Class Interval

• Frequency

• Cumulative Frequency

• Midpoint/Classmark

Multiple Choice

After constructing the classmark, what is the next step?

• Add the frequency and the classmark.

• Subtract the frequency and the classmark.

• Multiply the frequency and the classmark then add all of them together.

• Divide the frequency and the classmark then add all of them together.

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Multiple Choice

What column do we need to find the median class?

• Frequency

• Relative frequency

• Cumulative Frequency

• Succesive frequency

Open Ended

How do we find the cumulative frequency?

Multiple Choice

To find the median class, we need to:

• Add n by 2

• Subtract n by 2

• Multiply n by 2

• Divide n by 2.

Multiple Choice

After dividing n by 2 (n/2), the median class is the

• class interval equal to n/2

• class interval less than n/2

• class interval equal or greater than n/2.

• class interval greater than n.

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Multiple Select

What is the first step in finding the mode?

• Divide n by 2.

• The middle most number.

• Find the Modal Class.

• Find the class.

Multiple Choice

How to find the modal class?

• divide n by 2

• get the middle most number

• look for the class interval with the highest frequency

• It's the center

Multiple Choice

What is LBmc in the mode?

• Lower Class Boundary of the mean class?

• Lower Class Boundary of the Median Class

• Lower Class Boundary of the Modal Class

• Lower Class Boundary of Class

Multiple Select

What is fa in the formula?

• frequency allowed

• frequency above

• frequency alone

• frequency about

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Open Ended

Any question(s)

Unit Test 2 Coverage

• Mean, median, mode for ungrouped data

• Properties of the mean, median and mode (refer to the research 4 and the video)

• Mean, median, mode for grouped data

You may use the following during the test

• Powerpoints

• Videos

• Your own notes

• The video and notes that I will be posting tonight

Poll

How do you prepare for the test?

• Review tonight.

• Prepare all notes, calculator and everything I need.

• Ask questions and clarify things.

• I am good and ready.

Poll

Are you ready for the test tomorrow?

• Yes, I am.

• Absolutely

• No

• I am not sure.