Basic Math Examples

39

$39$ ,

44

$44$ ,

37

$37$ ,

42

$42$ ,

25

$25$ ,

22

$22$ ,

31

$31$ ,

33

$33$ ,

38

$38$ ,

30

$30$ ,

28

$28$ ,

32

$32$ ,

29

$29$ ,

43

$43$ ,

35

$35$ ,

46

$46$ ,

34

$34$ ,

45

$45$ ,

40

$40$

Step 1

The mean of a set of numbers is the sum divided by the number of terms.

\frac{39 + 44 + 37 + 42 + 25 + 22 + 31 + 33 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}

$\frac{39 + 44 + 37 + 42 + 25 + 22 + 31 + 33 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}$

Step 2

Simplify the numerator.

Tap for more steps...

Step 2.1

Add

39

$39$ and

44

$44$ .

\frac{83 + 37 + 42 + 25 + 22 + 31 + 33 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}

$\frac{83 + 37 + 42 + 25 + 22 + 31 + 33 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}$

Step 2.2

Add

83

$83$ and

37

$37$ .

\frac{120 + 42 + 25 + 22 + 31 + 33 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}

$\frac{120 + 42 + 25 + 22 + 31 + 33 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}$

Step 2.3

Add

120

$120$ and

42

$42$ .

\frac{162 + 25 + 22 + 31 + 33 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}

$\frac{162 + 25 + 22 + 31 + 33 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}$

Step 2.4

Add

162

$162$ and

25

$25$ .

\frac{187 + 22 + 31 + 33 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}

$\frac{187 + 22 + 31 + 33 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}$

Step 2.5

Add

187

$187$ and

22

$22$ .

\frac{209 + 31 + 33 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}

$\frac{209 + 31 + 33 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}$

Step 2.6

Add

209

$209$ and

31

$31$ .

\frac{240 + 33 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}

$\frac{240 + 33 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}$

Step 2.7

Add

240

$240$ and

33

$33$ .

\frac{273 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}

$\frac{273 + 38 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}$

Step 2.8

Add

273

$273$ and

38

$38$ .

\frac{311 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}

$\frac{311 + 30 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}$

Step 2.9

Add

311

$311$ and

30

$30$ .

\frac{341 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}

$\frac{341 + 28 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}$

Step 2.10

Add

341

$341$ and

28

$28$ .

\frac{369 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}

$\frac{369 + 32 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}$

Step 2.11

Add

369

$369$ and

32

$32$ .

\frac{401 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}

$\frac{401 + 29 + 43 + 35 + 46 + 34 + 45 + 40}{19}$

Step 2.12

Add

401

$401$ and

29

$29$ .

\frac{430 + 43 + 35 + 46 + 34 + 45 + 40}{19}

$\frac{430 + 43 + 35 + 46 + 34 + 45 + 40}{19}$

Step 2.13

Add

430

$430$ and

43

$43$ .

\frac{473 + 35 + 46 + 34 + 45 + 40}{19}

$\frac{473 + 35 + 46 + 34 + 45 + 40}{19}$

Step 2.14

Add

473

$473$ and

35

$35$ .

\frac{508 + 46 + 34 + 45 + 40}{19}

$\frac{508 + 46 + 34 + 45 + 40}{19}$

Step 2.15

Add

508

$508$ and

46

$46$ .

\frac{554 + 34 + 45 + 40}{19}

$\frac{554 + 34 + 45 + 40}{19}$

Step 2.16

Add

554

$554$ and

34

$34$ .

\frac{588 + 45 + 40}{19}

$\frac{588 + 45 + 40}{19}$

Step 2.17

Add

588

$588$ and

45

$45$ .

\frac{633 + 40}{19}

$\frac{633 + 40}{19}$

Step 2.18

Add

633

$633$ and

40

$40$ .

\frac{673}{19}

$\frac{673}{19}$

\frac{673}{19}

$\frac{673}{19}$

Step 3

Divide.

35.42105263

$35.42105263$

Step 4

The mean should be rounded to one more decimal place than the original data. If the original data were mixed, round to one decimal place more than the least precise.

35.4

$35.4$