Range and Standard Deviation Mini-Range and Standard Deviation Mini-QuizQuiz

1.Find the Range and Standard of the following set of data {3,13,22,22,11,3,3} (Round to the nearest tenth)

Statistics - ReviewStatistics - Review

Class GreetingClass Greeting

ObjectiveObjectivess

The student will be able to:

1. Interpret information from pie charts.

2. Construct a pie chart.

Pie charts can be thought of as circle graphs. Whole circle 100%

Pie Charts

To find the percent represented by each part, first count the number of parts the circle is cut up into and then divide 100% by the number of parts. 100% ÷ number of parts

100% 10 10% 100% 8 12.5%

A drinks machine dispenses 500 drinks on a Monday. The information is displayed in the pie chart. Use the information to find the number of each drink sold.

tea

milk

squash

coffee

Pie Charts

Milk 10%

Squash 40%

500 5

500 10 3

500 10

500 10 4

Each part is 100% ÷ 10 = 10%

Coffee 30%

100

150

50

200

sold

sold

sold

sold

Tea 20%

Step 1: Step 1: Total frequency if not givenTotal frequency if not given

Step 2:Step 2: Find fractions of 360Find fractions of 360ºº (360(360ºº Total Total

Frequency)Frequency)

Step 3: Step 3: Multiply each group by the answer to Step 2Multiply each group by the answer to Step 2

Step 4: Step 4: Draw the pie chartDraw the pie chart

Step 5: Step 5: Label carefullyLabel carefully

Total 300

In a survey, people were asked to indicate which one of five sports they liked best. The information is given in the table. Display the information in a pie chart.

Rugby

Football

Cricket

Ice Hockey

75

90

45

60

Favorite Sport

Squash 30

Constructing Pie Constructing Pie ChartsCharts

Total 300

75Rugby angle = 360 0

3009 ox

Drawing Pie Charts

In a survey, people were asked to indicate which one of five sports they liked best. The information is given in the table. Display the information in a pie chart.

Rugby

Football

Cricket

Ice Hockey

75

90

45

60

Favorite Sport

Squash 30

90Football angle = 360 8

300

01 ox

45Cricket angle = 360 4

3005 ox

60Ice Hockey angle = 360 2

3007 ox

30Squash angle = 360 6

3003 ox

Total 300

Rugby

Drawing Pie Charts

In a survey, people were asked to indicate which one of five sports they liked best. The information is given in the table. Display the information in a pie chart.

Rugby

Football

Cricket

Ice Hockey

75

90

45

60

Favorite Sport

Squash 30

75Rugby angle = 360 0

3009 ox

90Football angle = 360 8

300

01 ox

45Cricket angle = 360 4

3005 ox

60Ice Hockey angle = 360 2

3007 ox

30Squash angle = 360 6

3003 ox

Total 300

Drawing Pie Charts

In a survey, people were asked to indicate which one of five sports they liked best. The information is given in the table. Display the information in a pie chart.

Rugby

Football

Cricket

Ice Hockey

75

90

45

60

Favorite Sport

Squash 30

Rugby

75Rugby angle = 360 0

3009 ox

90Football angle = 360 8

300

01 ox

45Cricket angle = 360 4

3005 ox

60Ice Hockey angle = 360 2

3007 ox

30Squash angle = 360 6

3003 ox

Total 300

Rugby

Football

Cricket

Ice Hockey

75

90

45

60

Favorite Sport

Squash 30Football

Drawing Pie Charts

In a survey, people were asked to indicate which one of five sports they liked best. The information is given in the table. Display the information in a pie chart.

Rugby

75Rugby angle = 360 0

3009 ox

90Football angle = 360 8

300

01 ox

45Cricket angle = 360 4

3005 ox

60Ice Hockey angle = 360 2

3007 ox

30Squash angle = 360 6

3003 ox

Total 300

Drawing Pie Charts

In a survey, people were asked to indicate which one of five sports they liked best. The information is given in the table. Display the information in a pie chart.

Rugby

Football

Cricket

Ice Hockey

75

90

45

60

Favorite Sport

Squash 30

Rug

by

Football

75Rugby angle = 360 0

3009 ox

90Football angle = 360 8

300

01 ox

45Cricket angle = 360 4

3005 ox

60Ice Hockey angle = 360 2

3007 ox

30Squash angle = 360 6

3003 ox

Total 300

Cricket

Drawing Pie Charts

In a survey, people were asked to indicate which one of five sports they liked best. The information is given in the table. Display the information in a pie chart.

Rugby

Football

Cricket

Ice Hockey

75

90

45

60

Favorite Sport

Squash 30

Rug

by

Football

75Rugby angle = 360 0

3009 ox

90Football angle = 360 8

300

01 ox

45Cricket angle = 360 4

3005 ox

60Ice Hockey angle = 360 2

3007 ox

30Squash angle = 360 6

3003 ox

Total 300

Rugby

Football

Cricket

Ice Hockey

75

90

45

60

Favorite Sport

Squash 30

Drawing Pie Charts

In a survey, people were asked to indicate which one of five sports they liked best. The information is given in the table. Display the information in a pie chart.

Rug

by

Football

Cricket

75Rugby angle = 360 0

3009 ox

90Football angle = 360 8

300

01 ox

45Cricket angle = 360 4

3005 ox

60Ice Hockey angle = 360 2

3007 ox

30Squash angle = 360 6

3003 ox

Total 300

Rugby

Football

Cricket

Ice Hockey

75

90

45

60

Favorite Sport

Squash 30Ice Hockey

Squash

Drawing Pie Charts

In a survey, people were asked to indicate which one of five sports they liked best. The information is given in the table. Display the information in a pie chart.

Rug

by

Football

Cricket

75Rugby angle = 360 0

3009 ox

90Football angle = 360 8

300

01 ox

45Cricket angle = 360 4

3005 ox

60Ice Hockey angle = 360 2

3007 ox

30Squash angle = 360 6

3003 ox

Total 300

Rugby

Football

Cricket

Ice Hockey

75

90

45

60

Favorite Sport

Squash 30

90o108o

54o72o

36o

Drawing Pie Charts

In a survey, people were asked to indicate which one of five sports they liked best. The information is given in the table. Display the information in a pie chart.

RugbyFoo

tball

Cricket Ice Hockey

Squash

75Rugby angle = 360 0

3009 ox

90Football angle = 360 8

300

01 ox

45Cricket angle = 360 4

3005 ox

60Ice Hockey angle = 360 2

3007 ox

30Squash angle = 360 6

3003 ox

The pie chart gives information about the bills paid by a Water Company.The pie chart gives information about the bills paid by a Water Company. (a) Work out the size of the angle representing Wages.(a) Work out the size of the angle representing Wages.

(b) Work out the amount it spent on Rates. (b) Work out the amount it spent on Rates. Hint: The Water Company spent £18 000 on Materials.Hint: The Water Company spent £18 000 on Materials.

(a) 30%(360º)º) 0.3(360º)º)Answer: 108ºº

(b) Let x = Total Paid

24%(x) =) = £18,000

Total Paid = £75,000

Rates = £75,000(21%)

Rates = £75,000(0.21)

Rates = £15,750

Objective: Objective: The students will be The students will be able to able to InterpretInterpret information information from pie charts and from pie charts and ConstructConstruct pie charts.pie charts.

Lesson Summary:

Objective: Objective: List outcomes of chance List outcomes of chance experiments involving equally likely experiments involving equally likely outcomes and represent probabilities outcomes and represent probabilities of those outcomes using fractions, of those outcomes using fractions, decimals and percentages.decimals and percentages.

Preview of the Next Lesson:

HomeworkHomework

Statistics HW 6 and HW 7