Tuesday, June 15, 2010

Exam Reveiw

Define the following:

Variable: A letter that represents an unknown number.

Example: A,B,C

Equation: A mathematical statement with two expression that have the same value
.
Example: 1+1=2

Expression: Any single number or variable or a combination of operations involving numbers and variable.


Example: 2x2x2



Find and Describe the pathern,Identify the 3 terms.



64,58,52,46,.......40,34,28



As you see the pathern is that the number decreases by 6.



Define the following:



Mean: The mean is the average of the whole the data.



Example: The average of the this data is 78.6



67,75,78,84,89



Median: The median is the middle number of the data after it is arranged.



Example:10,4,9,5,2,8,1,3,6,7 after it was been arranged 1,2,3,4,5,6,7,8,9,1o the middle number is 5. 1,2,3,4,5,6,7,8,9,10.



Mode: The mode is the number that showed up the most in the data.



Example:12,33,25,44,33,19,65,78,33. The mode in this data is 33 because it shows up the most.



Outlier: An outlier is a number that is too small or big compared to data.



Example: 10,12,16,17,19,24,1999. The outlier is 1999 because it is way too big compared to rest of the data.



Range: The range is the difference of the biggest number and the lowest number in the data.(Positive)



Example: 23,67,89,25,100,13,7. The range of this data is 93. 100-7=93.



Here is website.
http://staff.argyll.epsb.ca/jreed/math7/strand4/4104.htm

9 comments:

  1. Nice post Aldrin. It looks very organized. Next time use different colors for the important words because you only used a different color for only a few of the important words. Other than that, great job!

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  2. Good job Meljohn! It's very neat and organized. Next time try make the picture a little bigger and also try to use more colours.

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  3. Nice post Mel john.It looks very neat and organized.Next time use different colors for the important words and try make the picture a little bigger.

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  4. Nice job Meljohn! It looks very neat and organized.Nezt time try to use different colours for important words.

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  5. good job Meljohn your post is very well prepared and the video you posted was very helpful.Next time make the words bigger

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  6. Good Job! It was very neat. next time you should add more colour and make the words bigger.

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  7. Nice post Meljohn. It is very neat and easy to understand. Next time you should try not to leave to much space in between the words and add a little more colour. Other than that, great job.

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  8. Great job, Meljohn!! your post was neat, but next time you should add more colour to the important words. Other tahn that great job!!!

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  9. Thank you for posting all the notes, I didnt get all of it. Anyways, good job.I like the pictures. Good Job (:

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