what is the mean? how do we find it? the mean is the numerical average of the data set. the mean is...

40

Upload: audra-miller

Post on 04-Jan-2016

222 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then
Page 2: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then
Page 3: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

What is the MEAN?How do we find it?

The mean is the numerical average of the data set.

The mean is found by adding all the values in the set, then dividing the sum by the number of values.

Page 4: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

Lets find Abby’s MEAN science test

score?

9784

73

88100

63

97

95

86+

783

783 ÷ 9

The mean is 87

Page 5: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

How to find it using your calculator!!!!

Page 6: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then
Page 7: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then
Page 8: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

What is the MEDIAN?How do we find it?

The MEDIAN is the number that is in the middle of a set of data

1. Arrange the numbers in the set in order from least to greatest.

2. Then find the number that is in the middle.

Page 9: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

978473 88 10063 979586

The median is 88.

Half the numbers are

less than the median. Half the numbers are

greater than the median.

Page 10: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

MedianSounds like MEDIUM

Think middle when you hear median.

Page 11: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

How do we findthe MEDIAN

when two numbers are in the middle?

1. Add the two numbers.

2. Then divide by 2.

Page 12: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

978473 88 10063 9795

88 + 95 = 183

183 ÷ 2 The median is91.5

Page 13: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

Finding the median using a calculator

Page 14: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then
Page 15: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

What is the MODE?How do we find it?

The MODE is the piece of data that occurs most frequently in the data set.

A set of data can have:

One mode More than one mode No mode

Page 16: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

978473 88 10063 979586

The value 97 appears twice.All other numbers appear just once.

97 is the MODE

Page 17: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

A Hint for remembering the MODE…

The first two letters give you a hint… MOde

Most Often

Page 18: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

Which set of data has ONE MODE?

9, 11, 16, 8, 16

9, 11, 16, 6, 7, 17, 18

18, 7, 10, 7, 18

A

C

B

Page 19: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

Which set of data has NO MODE?

13, 12, 12, 11, 12

9, 11, 16, 6, 7, 17, 18

18, 7, 10, 7, 18

A

C

B

Page 20: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

Which set of data has MORE THAN ONE MODE?

9, 11, 16, 8, 16

9, 11, 16, 6, 7, 17, 18

18, 7, 10, 7, 18

A

C

B

Page 21: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

How to find the mode using your calculator

Page 22: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

What is the RANGE?How do we find it?

The RANGE is the difference between the lowest and highest values.

Page 23: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

978473 8863 979586

97-6334

34 is the RANGE or spread

of this set of data

Page 24: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

Find the….

Page 25: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then
Page 26: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

Find the….

Page 27: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then
Page 28: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

Find the….

Page 29: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then
Page 30: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

Find the….

Page 31: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then
Page 32: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

Find the….

Page 33: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then
Page 34: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

Box and Whisker Plot

Page 35: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

A box plot summarizes data using the median, upper and

lower quartiles, and the extreme (least and greatest) values. It allows you to see important characteristics of

the data at a glance.

Page 36: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

Box and Whisker PlotsHow to make them on a

calculator

Page 37: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then
Page 38: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then
Page 39: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then
Page 40: What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then

Let’s try