WARMUP

1
WARMUP

• WRITE 3,450,000,000 IN SCIENTIFIC NOTATION
• WRITE .000325 IN SCIENTIFIC NOTATION
• WRITE 3.05 X 10-4 IN DECIMAL NOTATION
• If a right angle triangle has one ANGLE OF 37
  DEGREES and a SECOND ANGLE OF 53 DEDGRES, what is
  the MEASURE OF THE THIRD ANGLE IN DEGREES?

2
HOMEWORK PAGE 138 1-39

• IF YOU CAN DO THESE YOU ARE A SUPER MATHEMATICIAN

3
Scientific Notation
COURSE 2 LESSON 3-2
Pages 138139 Exercises
17. 615,000,000 18. 24,390,000 19. 4,770,000,0
00 20. 2,250 21. 35.4 is not between 1 and
10. 22. 210 is not a power of 10. 23. 0.387
is not between 1 and 10.
1. 7.5 ? 103 2. 7.5 ? 107 3. 1.25 ?
103 4. 4.4 ? 104 5. 1.49 ? 108 6. 3.4025 ?
104 7. 1.102 ? 104 8. 1.2 ? 105
9. 3,400 10. 590 11. 8,210 12. 667.8 13. 7
4,500 14. 996.73 15. 500,000,000,000 16. 70.
2
3-2
4
COURSE 2 LESSON 3-2
27. 3.26 ? 1011 28. 3.45 ? 104 29. 1.228 ?
105 30. 1.2285 ? 104 31. 3.12 ?
108 32. 20,000 min 33. about 3.3 ? 102 h
34. 345 35. 1,203,000,000,000,000 36. 3,120 3
7. 1,600 lb 38. 5,880,000,000,000
mi 39. 20,000,000,000,000 red blood cells
24. 75.5 is not between 1 and 10. 25. 1.290 ?
1022, 3.303 ? 1023, 6.421 ? 1023, 4.869 ?
1024, 5.976 ? 1024, 8.686 ? 1025, 1.024 ?
1026, 5.688 ? 1026, 1.900 ? 1027 26. 3.5 ?
105
3-2
5
Scientific Notation
COURSE 2 LESSON 3-2
43. 7 cents 44. D 45. I 46. D 47. 2 7.5
? 104 in. 75,000 in. 1 only one part
correct 48. 40 49. 72
50. 1,936 51. c lt 2 52. y 49 53. w
18
40. Answers may vary. Sample The decimal point
moves 8 places to the left in 725,000,000 to get
7.25, so the exponent is 8 725,000,000 7.25 ?
108. 41. The first colony is growing faster,
because 2.2 ? 106 gt 6.3 ? 105. 42. 3.627 ? 109,
3,627,000,000
3-2
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STATISTICS-MEASURES OF CENTRAL TENDENCY

• MATHEMATICS
• MR. SKRTICHS CLASS

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STATISTICS

• STATISTICS
• INFORMATION THAT HAS BEEN COLLECTED, ANALYZED,
  AND PRESENTED IN AN ORGANIZED FASHION.

8
WHAT ARE EXAMPLES OF THINGS THAT WE WOULD USE
STATISTICS IN OUR DAILY LIFE?
9
HOW ABOUT

• FINDING TEMPERATURES FOR ANY GIVEN PLACE AT ANY
  GIVEN TIME OF THE YEAR.
• CARS - MILAGE PER GALLON OF GAS.
• STOCK MARKET - EARNINGS PER SHARE.
• CANDY BARS - WEIGHT PER PACKAGE

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EXAMPLES OF STATISTICAL INFORMATI0N

• AVERAGE TEMPERATURE IN MAINE ON DECEMBER 21.
• NUMBER OF RAISINS IN A BOX OF RAISIN BRAN.
• THE MEDIAN AGE OF STUDENTS IN A 7TH GRADE MATH
  CLASS.
• THE RANGE OF SHOE SIZE IN THE NFL.

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(No Transcript)
12
WHAT IS THE FOUR MAIN TERMS WE USE IN STATISTICS?

• MEAN
• MEDIAN
• MODE
• RANGE

13
WRITE THIS DOWN
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WHAT IS A MEAN?

• THE MEAN IS THE SUM OF THE NUMBERS IN A SET OF
  DATA DIVIDED BY THE NUMBER OF PIECES OF DATA.

15
WRITE THIS DOWN
16
WHAT IS A MEDIAN?

• THE MEDIAN IS NUMBER IN THE MIDDLE IN A SET OF
  DATA WHEN THE DATA ARE ORGANIZED FROM THE LEAST
  TO THE GREATEST.

17
WRITE THIS DOWN
18
WHAT IS A MODE?

• THE NUMBER OR ITEM THAT APPEARS MOST OFTEN IN A
  SET OF DATA.

19
WRITE THIS DOWN
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WHAT IS A RANGE?

• THE DIFFERENCE BETWEEN THE GREATEST AND LEAST
  NUBMER IN A SET OF DATA.

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STATISTICS

• WHY IS STATISTICS IMPORTANT?
• WE CAN PREDICT THE POSITIVE OUTCOME WITH KNOWN
  PAST DATA.
• WE CAN PREDICT THE NEGATIVE OUTCOME WITH KNOWN
  PAST DATA.

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EQUATIONS - RECAP

• KNOWING THE CENTRAL TENDENCY OF DATA CAN HELP IN
  INTERPRETING DATA.
• KNOWING THE MEAN, MEDIAN, MODE, AND RANGE DATA
  CAN HELP US INTERPRET THIS DATA.

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FIND THE MEAN, MEDIAN, MODE, RANGE OF THE
FOLLOWING DATA
24
BOWLING SCORES
25
BOWLING SCORES
669 699 705 _____ 2073
MEAN
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BOWLING SCORES
669 699 705 _____ 2073
2073/15 138.2
27
BOWLING SCORES
MEDIAN
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BOWLING SCORES
115 121 124 130 131 131 131 137 143 143 143 152
156 156 158
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BOWLING SCORES
MODE
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BOWLING SCORES
115 121 124 130 131 131 131 137 143 143 143 152
156 156 158
31
BOWLING SCORES
115 121 124 130 131 131 131 137 143 143 143 152
156 156 158
TWO MODES 131 AND 143
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BOWLING SCORES
RANGE
158 115 43
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HOMEWORK DO PAGE 58-59 1 TO 20.