1. 5-9 Using Averages
Math Notes
Statistics, Data Analysis, and
Probability 1.1

2. What you’re learning today...
Statistics, Data Analysis, and Probability 1.1 -
Know the concept of mean, ...; compute...
simple examples...

3. What you’re learning today...
Statistics, Data Analysis, and Probability 1.1 -
Know the concept of mean, ...; compute...
simple examples...
What is the average of:
36, 48, 15, 73, 58

4. What you’re learning today...
Statistics, Data Analysis, and Probability 1.1 -
Know the concept of mean, ...; compute...
simple examples...
What is the average of:
36, 48, 15, 73, 58
36 + 48 + 15 + 73 + 58 = 230

5. What you’re learning today...
Statistics, Data Analysis, and Probability 1.1 -
Know the concept of mean, ...; compute...
simple examples...
What is the average of:
36, 48, 15, 73, 58
46
36 + 48 + 15 + 73 + 58 = 230 5 230

6. What you’re learning today...
Statistics, Data Analysis, and Probability 1.1 -
Know the concept of mean, ...; compute...
simple examples...
What is the average of:
36, 48, 15, 73, 58
46
36 + 48 + 15 + 73 + 58 = 230 5 230
The average of the five numbers is 46.

7. What you’re learning today...

8. What you’re learning today...
=

9. What you’re learning today...
average = mean

10. Find the mean for each set of data.
$25 $16 $32 $39

11. Find the mean for each set of data.
STEP ONE
$25 $16 $32 $39 Add the
ADDENDS

12. Find the mean for each set of data.
STEP ONE
$25 Add the
ADDENDS
$16
$32
$39

13. Find the mean for each set of data.
STEP ONE
$25 Add the
ADDENDS
$16
$32
+ $39

14. Find the mean for each set of data.
STEP ONE
$25 Add the
ADDENDS
$16
$32
+ $39
$112

15. Find the mean for each set of data.
STEP ONE
$25 Add the
ADDENDS
$16
$32
+ $39
$112

16. Find the mean for each set of data.
STEP ONE
$25 Add the
ADDENDS
$16
$32
$39 4 ADDENDS
+
$112

17. Find the mean for each set of data.
STEP ONE
$25 Add the
ADDENDS
$16
$32 STEP TWO
$39 4 ADDENDS DIVIDE the
+ SUM by the
number or
$112 ADDENDS.

18. Find the mean for each set of data.
STEP ONE
$25 Add the
ADDENDS
$16
$32 STEP TWO
DIVIDE the
ADDENDS
+ $39 SUM by the
number or
$112 ADDENDS.
4

19. Find the mean for each set of data.
STEP ONE
$25 Add the
ADDENDS
$16
$32 STEP TWO
DIVIDE the
ADDENDS
+ $39 SUM by the
number or
$112 ADDENDS.
4

20. Find the mean for each set of data.
STEP ONE
$25 Add the
ADDENDS
$16
$32 STEP TWO
DIVIDE the
ADDENDS
+ $39 SUM by the
number or
ADDENDS.
4 $112

21. Find the mean for each set of data.
STEP ONE
$25 Add the
ADDENDS
$16
$32 STEP TWO
DIVIDE the
ADDENDS
+ $39 SUM by the
number or
$28 ADDENDS.
4 $112 $28 is the MEAN

22. Find the mean for each set of data.
50cm 30cm 10cm 40cm 20cm

23. Find the mean for each set of data.
STEP ONE
50cm 30cm 10cm 40cm 20cm Add the
ADDENDS

24. Find the mean for each set of data.
STEP ONE
50cm Add the
30cm ADDENDS
10cm
40cm
20cm

25. Find the mean for each set of data.
STEP ONE
50cm Add the
30cm ADDENDS
10cm
40cm
+ 20cm

26. Find the mean for each set of data.
STEP ONE
50cm Add the
30cm ADDENDS
10cm
40cm
+ 20cm
150cm

27. Find the mean for each set of data.
STEP ONE
50cm Add the
30cm ADDENDS
10cm
40cm
+ 20cm
150cm

28. Find the mean for each set of data.
STEP ONE
50cm Add the
30cm ADDENDS
10cm
40cm
+ 20cm 5 ADDENDS
150cm

29. Find the mean for each set of data.
STEP ONE
50cm Add the
30cm ADDENDS
10cm
STEP TWO
40cm
DIVIDE the
+ 20cm 5 ADDENDS
SUM by the
150cm number or
ADDENDS.

30. Find the mean for each set of data.
STEP ONE
50cm Add the
30cm ADDENDS
10cm
STEP TWO
40cm
DIVIDE the
+ 20cm ADDENDS
SUM by the
150cm number or
ADDENDS.
5

31. Find the mean for each set of data.
STEP ONE
50cm Add the
30cm ADDENDS
10cm
STEP TWO
40cm
DIVIDE the
+ 20cm ADDENDS
SUM by the
150cm number or
ADDENDS.
5

32. Find the mean for each set of data.
STEP ONE
50cm Add the
30cm ADDENDS
10cm
STEP TWO
40cm
DIVIDE the
+ 20cm ADDENDS
SUM by the
number or
ADDENDS.
5 150cm

33. Find the mean for each set of data.
STEP ONE
50cm Add the
30cm ADDENDS
10cm
STEP TWO
40cm
DIVIDE the
+ 20cm ADDENDS
SUM by the
number or
ADDENDS.
30cm
5 150cm
30cm is the MEAN

34. Find the mean for each set of data.
503mi 922mi 512mi 361mi 387mi

35. Find the mean for each set of data.
STEP ONE
503mi 922mi 512mi 361mi 387mi Add the
ADDENDS

36. Find the mean for each set of data.
STEP ONE
503mi Add the
922mi ADDENDS
512mi
361mi
387mi

37. Find the mean for each set of data.
STEP ONE
503mi Add the
922mi ADDENDS
512mi
361mi
+ 387mi

38. Find the mean for each set of data.
STEP ONE
503mi Add the
922mi ADDENDS
512mi
361mi
+ 387mi
2685mi

39. Find the mean for each set of data.
STEP ONE
503mi Add the
922mi ADDENDS
512mi
361mi
+ 387mi
2685mi

40. Find the mean for each set of data.
STEP ONE
503mi Add the
922mi ADDENDS
512mi
361mi
+ 387mi 5 ADDENDS
2685mi

41. Find the mean for each set of data.
STEP ONE
503mi Add the
922mi ADDENDS
512mi
STEP TWO
361mi
DIVIDE the
+ 387mi 5 ADDENDS
SUM by the
2685mi number or
ADDENDS.

42. Find the mean for each set of data.
STEP ONE
503mi Add the
922mi ADDENDS
512mi
STEP TWO
361mi
DIVIDE the
+ 387mi ADDENDS
SUM by the
2685mi number or
ADDENDS.
5

43. Find the mean for each set of data.
STEP ONE
503mi Add the
922mi ADDENDS
512mi
STEP TWO
361mi
DIVIDE the
+ 387mi ADDENDS
SUM by the
2685mi number or
ADDENDS.
5

44. Find the mean for each set of data.
STEP ONE
503mi Add the
922mi ADDENDS
512mi
STEP TWO
361mi
DIVIDE the
+ 387mi ADDENDS
SUM by the
number or
ADDENDS.
5 2685mi

45. Find the mean for each set of data.
STEP ONE
503mi Add the
922mi ADDENDS
512mi
STEP TWO
361mi
DIVIDE the
+ 387mi ADDENDS
SUM by the
number or
ADDENDS.
537mi
5 2685mi
537mi is the MEAN