How do you use Excel to find the mean? Use the data below and the information below to find the mean of the data.

All the numbers in the data represents ages except for -1, 998, and 999. -1 represents missing data, 998 represents the people who refused to give their age, and 999 represents people who put don't know.

Data:

-1

-1

-1

998

999

999

24

65

20

40

41

19

52

35

18

28

22

40

28

21

27

35

36

23

54

44

28

29

65

19

36

22

39

70

34

30

52

56

49

35

27

48

28

31

18

45

24

19

21

21

37

41

24

32

43

27

49

30

22

62

21

53

27

29