Measures of Central Tendency

Here's a >link< for more games/questions on measures of central tendency.

Also a video that might help:

Algebraic Questions

Here's a >link< for more algebra games

Also a video, hope this helps:

Postitve and negative integer questions

Exam Review Questions

2 + (-3)

7 - (-5)

-6 + (-6)

1 - (-1)

12 + (-8)

-6 - (-3)

50 + (-33)

14 - (-4)

21 + (-17)

14 + (-7)

(-19) - 15

(-16) - 12

20 - (-13)

-17 + 17

(-16) - 16

-12 + 17

15 + (-21)

(-16) + (-23)

69 + (-96)

14 - (-31)

Practice Questions: Algebra

1. a + 32 =50

2. a - 69 = 131

3. 8g - 5 = 43

4. 3c = 21

5. What is an equation

6. 8 = g - 12

7. What is the opposite of +

8. 21 = 4 + p

9. What is the opposite of x

10. what is the opposite of -

11. What is the constant 3+v

12. Which one is the expression and what is the equation 6c = 36 x+9

13. What is a numerical coefficient

14. 3+2v

15. What is a variable

Exam Review for JUNE 22

Math review for exam on Integers

Negative numbers represent values below zero
and positive numbers represent values above zero






an example would be above and below ground or sea level( a bird is flying 5 meters above the lake and a fish is flying 6 meters directly under the bird how much is the difference between them)
How do you figure out if a integer statement is a addition statement or subtraction?
you check the operation
eg 1+(-2)=(-1) would be a addition statement
3-(-1)=4 is a subtraction statement

Opposite integers have the same numeral but different signs they always equal 0 like
(+5) -(-5)=0 also (+3)-(-3)=0


you can also solve them on number lines


Here is a game where you can play and learn about Integers
http://www.free-training-tutorial.com/negative-numbers/speedboat.html


http:/http://www.free-t/

here is a video if the games didn't help

http://www.youtube.com/watch?v=yteDWPyeNYI



I hope you do good on the exam and study from the study package

exam review

answer these quetions

2n+1=11


3k+5=20


S+2=1929


9s=81


h+3=9


w-2=100

Exam: Practice Questions

These are some of the things you need to know how to do in the exams, so here are some practice questions.

Convert to fraction, decimal, and percent :

1/3 =

0.50 =

90% =

2/8 =

0.30 =

80% =

Use BEDMAS to answer the following :

8451 + 1254 - 35648 =

1165 × 623 ÷ 15615 =

4894 - 4128 + 7975 =

1254 ÷ 51551 - 45 =

6379 × 8457 ÷ 9452 =

3954 ÷ 7851 + 5451 =

Try finding the factors of :

154

121

56

78

12

68

Answer the following :

6 + 9 =

-5 + -2 =

3 + -7 =

-8 + 4 =

8 - 10 =

-5 - -3 =

6 - -8 =

-5 + 10 =

Write the expression or equation to the given pictures :

Create diagrams or pictures for these expressions and equations :

9x + 36 =

25x - 22

5x + 2 =

12x

9x - 6

14 + 9x =

Find the mean, median,mode, range and outlier to these numbers :

8,55,51,54,52,58,56,57

83,55,85,88,89

77,75,72,54,78,73

45,46,47,43,49,12

12,15,14,16,13,25

22,25,28,27,26,57

Don't forget to study your math exam review sheets !

Our math exam is on Wednesday, June 22nd .

Taylor Cunha. recongize
Exam review:
transformations-moving a shape on a grid
translation-slide along a straight line
rotation-turn about fixed point
reflection-mirror image
know how to do and describe each of them!
(+,+)quadrant 1
(-,+)quadrant 2
(-,-)quadrant 3
(+,-)quandrant 4
decribe the horizontal and vertical
movements between two points 2 units right and 3 units left
Adding, subtracting,multipling and dividing decimal numbers using a calculator
21.34+32.56+1.09=54.99
BEDMAS
(34.67 + 23.65) x 6/11.2 =
23.45 +18.10=41.55
Brackets
Exponents
Division
Multiplication
Subtraction
perpendicular = 90 degrees
Bisector= to cut in 2
intersecting =crossing
parallel lines never meet
angle bisector = if the angle is 52 and gets bisected what are the measures of the two new angles? 26 degrees
area of a triangle is bxh divided by 2
area of a parallelogram bxh
convert fractions,decimals and percent

Integers

Here's a >link< for a game to help you on integers

Also a video to help you:

Measures Of Central Tendency

- A value that represents the centre of a data set

- Can be the mean, median or mode

- Data set is a group of numbers that you must arrange in order from least to greatest

- 2, 3, 4, 5, 6, 5, 4, 5, 3, 4, 6, 7, 5, 34, 3

- 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 7, 34

Median- the middle number in a set of data after the data have been arrange in order

Median of 2, 5, 6, 8, 9, is 6

Medina 1, 3, 6, 8, 9, 10 is 7

6+8=14

14/2=7

Mode- the most frequently occurring number in a set of data

- Mode and most both have 4 letters and mo

- Mode of 3, 5, 7, 7, 9, is 7

- Mode of 2, 2, 4, 6, 6, 11 is 2, 6

- Mode of 1, 2, 3 5, is no mode

- Mode of 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, is no mode

Mean- a measure of central tendency

The sum of a set of values divided by the number of values in the set

Mean of 6, 4, 8, is 4

4, 6, 8

4+6+8=18

18/3=6a

- Range - the positive difference between the largest and smallest values in a data set range of 4, 8,56, 9, 1, 3, 5, 8, 6, is 8

1, 3, 4, 5, 5, 6, 6,8, 8, 9

9-1=8 mean,

-2, -7, -1, -4

-7, -4, -2, -1

(-1) - (-7)=6

outlier -a value that is much larger of smaller then the other data value the data set may have then 1 outlier or zero outliers

Outliers for- 1, 67, 68, 67 ,64, 35, 100 are 1 and 100

Find mean, median, mode, range and outliers for the following data sets

18, 19, 79, 17, 20, 12 - Mean

14, 14, 16, 15 1, 16 - Median

98, 202, 99, 91, 2, 95, 89 ,88 94 - Mode

Measures Of Central tendency!

measures of central tendency
A value that represents the centre of a date set. Can be the mean, median, or mode.

Data set is a group of numbers that you must arrange in order from least to greatest.
eg: 2,3,4,5,6,5,4,5,3,34,7,7,3,2,5

Order: 2, 333,444,555,66,7,34


Median- the middle number in a set of data after the data have been arranged in order.
median of- 2,5,6,8,9 is 6
median of - 1,3,6,8,9,10, is 7
if this happens add the two numbers and divide by 2. 6+8=14 then 14/2= 7


eg: 1,2,7,8,9,10 7+8=15/2 15/2= 7.5


Mode- the most frequently occurring number in a set of data.

Mode and most both have 4 letters and mo.
eg:

mode of- 3,5,7,7,9 is 7
mode of - 2,2,4,66,8,11 is 2 and 6
remember you can have more than one mode!
mode of- 1,2,3,5 is no mode
mode of- 1,1,1,2,2,2,3,3,3 is no mode
mode of- 1,1,1,2,2,2,3,3,3,4 is 1,2,3

Mean- a measure of central tendency
the sum of a set of values divided by the number of values in the set.
eg: 4,6,8
4+6+8=18 18/3=6

Range- the positive difference between the largest and smallest values in a data set.
range of- 4,5,5,6,9,1,3,8,8,6 is
1,3,4,5,5,6,6,8,8,9 is 8
9-1=8
biggest number take away little number
-2,-7,-1,-4
-7,-4,-2,-1= +6

outlier- a value that is much larger or smaller than the other data value.
the data set may have more than 1 outlier or 0 outliers.
eg:
outliers for- 1,67,68,67,64,65,100 are 1 and 100

here is a video to help you out:

http://www.youtube.com/watch?v=oNdVynH6hcY&feature=related

here are 2 links to help you out:

http://www.statcan.gc.ca/edu/power-pouvoir/ch11/5214867-eng.htm

http://statistics.laerd.com/statistical-guides/measures-central-tendency-mean-mode-median.php

And for homework, find the mean, median, mode, range, outliers for the following:

18,19,79,19,20,12

14,14,16,15,1,16

98,202,99,91,2,95,89,88,94

I hope this helped you guys out!!

Notes: Algebra

1) Isolate the variable

- Meaning to get it by it self

2) What you do to one side of the expression,you must do to the other.

for example:

A+4= 10

A+4-4=10-4

A=6

After you get your answer, check it:

Step 1: Copy the equation again (A+4=10)

Step 2: Just replace every "a" you see with your answer for the equation (6)

You will end up with this:

6+4=10

6+4-4=10-4

6=6

Here are other examples:

B - 2 = 5

B

- 2 + 2 = 5 + 2

B=7

2j + 1 = 9

2j + 1 - 1 = 9 - 1

2j + 1 - 1 = 9 - 1

2

j=4

And if you still need more help on Algebra here's a link

And here's the link to the video

Algebra : Notes

Here is a video to help you solve Multi-Step Equations:


Also click on the >link< for more algebraic equation problems.

Notes: Algebra

1) Isolate the variable (get it by itself).

2) What you do to one side of the expression, you must do to the other.

for example:

After you get your answer, check it, using this technique:

1) Copy the equation again (A+4=10)

2) Just replace every "a'' you see with your answer for the equation (6)

You will end up with this:

Here are other examples:

B - 2 = 5

B - 2 + 2 = 5 + 2

B = 7

2j + 1 = 9

2j + 1 - 1 = 9 - 1

2j + 1 - 1 = 9 - 1

2

j=4

Here's a link to help you with it: I love algebra.

And a link to the video.

Notes, Algebra

Equation: mathematical statement with 2 expressions that have the same value.
eg: x+2=3 y-7=(-4)
3a-2=a+2 6=4



Isolate the variable = get the letter by itself.


here is a question for you:


Identify- variable, numerical coefficient, constant,
5y-6=
variable= y numerical coefficient= 5 constant=(-6)

you most memorize these opposite opperations:

+,- x, / -,+ /,x

here is another question: (remember to box your answer)


a+4=10
a+4-4=10-4
a=6
check
a+4=10
6+4=10
10=10


here is video to help you out:

www.youtube.com/watch?v=bAerID24QJ019


here is a website to help you guys out:
http://www.helpingwithmath.com/resources/wor_algebra.htm



I hope this helped you guys out!!

Algebra

ALGEBRA!

The point of Algebra is to find the meaning of the letter

Example:

B-2=5

B would be 7

But to be sure, you have to CHECK it.

B-2=5

7-2=5

5=5

So that means B=7

HERE IS A VIDEO TO HELP YOU

HERE IS A PICTURE

And finally here is a LINK to help YOU!

Answer's for today's questions.

First there are 4 steps .
First step: Isolate the variable
Second step: Reverse the operations
Third step: It become's a zero pair, and then the variable is isolated by itslef so you solve the question.
Fourth step: Rewrite the question and check your answer.

First Question: A+4=10
A+4-4=10-4
10-4=6
Check it :
10+4= 10
6+4=10
10=10 .
A= 6.

Second Question:
B-2=5
B-2+2=5+2
B=7
Check it.
B-2=5
7-2=5
5=5
B=7

Third Question: / = Divided
W/3=6 ( divided)
Wx3=6x3
6x3=15
Check it.
W/3=6
18/3=6
6=6
W= 18.

Fourth Question: / = Divided , brackets means multiplying.
3C=21
3/3=21/3=7
Check it.
3C=21
3(7)=21
21=21
C=7

Fifth Question: / = Divided
F/3-2=1
F/3+2+1+2
Check it.
F/3-2=1
1+2=3
9/3-2=1
3-2=1
1=1
F= 9.

Sixth Question: / = Divided. brackets means multiply.
2J+1=9
2J=1-1+9-1.
2/2=8/2
Check it.
2J+1=9
2(4)+1=9
8+1=9
9=9
J=4.

Notes: Circles

REMEMBER to do Homework pages 90 - 91 and study for Math test tomorrow(April 7, 2011)!

Here's a video to help you more on circumferences:


Also click on the >LINK< for a game to help you more on circumferences, diameters and radius.

Correct answer's for Homework Booklet 66-67

Circle the correct response to complete each statement
1:Only odd/even numbers can be divided evenly by 2. Answer: Even for example 8/2 = 4

2:If the sum of the digits of a number is divisible by 9, then the whole number is
divisible by 4/9. Answer: 9 For example: 18 is a factor of 9 , 9x2= 18

3:A number is divisible by 8 if the number is divisible by 2 at least two /three times. Answer: three for example: 24 is a factor of 8, it is x3 8x3= 24

4:A fraction is written in lowest terms when the numerator and denomanatior no common/possible factos other than 1. Answer: Common for example: 2/3 (two thirds)

5: Numbers can/cannot be divided by 0. Answer: Cannot, for example 4 candies cannot be divided amoung 0 children.

6: Which of the following numbers are divisible by 5? Explain how you know.
482,506,955,1090,956,911. Answer: 955,1090

7: a) Use a diagram or a table to sort the following numbers according to divisibilty by 8 and 10.
700,416,3296,1720,280,190. 8- 41, 3296. 10- 700, 1720, 280,190. No common factors.
b) Uf the number of apples in a basket is divisible by 8 and 10, what is the smallest number other than 1 that it is also divisible by> How do you know?
1: 2- Well because it has to be an even number, 8 and 10 are factors of 2, 2x4=8. 2x5=10

8: Use divisibilty rules to determine the common factors for each pair of numbers.
a) 12- 6,1,2,3,4,12
b) 35- 5,1,7,35
c) 48- 8,48,24,6,12,64,1,2,3

9: Use divisibilty rules to determine the common factors for each pair of numbers.
a) 4 and 8- 1,2,4
b) 6 and 9- 1,3
c) 8 and 12- 1,2,4

10: Use divisibilty rules to determine the common factors for each pair of numbers.
a) 10 and 25- 1,5
b) 8 and 16- 1,2,4,8
c) 27 and 36- 1,3,9

11: Determine the factors of each number.
a) 16- 1,2,4,8,6
b) 24- 1,2,3,4,6,8,12,24
c) 60- 60,30,20,1,2,3,4,5,6,10,12,15

12: a) Use divisibilty rules to determine the common factors of 18 and 24. Use a Venn diagram to show your answer.
18- 9,18 . 24- 12,4,8,24. Common- 3,2,6,1
b) Identify the greatest common factor of 18 and 24 - answer: 6

13:Write the following fractions in lowest terms. Show your thinking.
a) 10/12=5/6
b)3/9=1/3
c)25/30=5/6
d)9/45=1/5
e)16/18=8/9
f)12/24=1/2

14: Desiree is buying boxes of chocolates for tables at the banquet. The people at each table will divide the chocolates equally. The tables seat 2,3,5 or 6 people. Which size of chocolate boxes will work on all tables 12 or 30? Show your thinking.
a) 30- because there is 16 people in total , and they each get 1, and there are 13 chocolates left over.

15: Yanka is teaching a swim class. She needs to divide the class into teams for a relay race. There are 18 students.
a) List all the possible sizes of the relay teams : 4.6.1.2.3.18
b) Part of the swimming pool is being used by another class. There are only 3 lanes available. Can Yanika divide her class equally into those lanes? Explain how you know.
Yes, because 3 is a factor of 18. 3x6=18