Mathematics, 10.02.2020 17:20 miraclewhipppp

What is the standard deviation of this data set? Use a calculator to help you.
20, 23, 32, 36, 41, 43, 44, 45, 47, 54, 55, 59, 61, 63, 66

Answers: 3

Show answers

Answers

Answer from: Lalawhite1082

Standard deviation = 14.064

Step-by-step explanation:

We are given the following data;

X X - Xbar $(X-Xbar)^{2}$

20 20 - 46 = -26 676

23 23 - 46 = - 23 529

32 32 - 46 = -14 196

36 36 - 46 = -10 100

41 41 - 46 = -5 25

43 43 - 46 = -3 9

44 44 - 46 = -2 4

45 45 - 46 = -1 1

47 47 - 46 = 1 1

54 54 - 46 = 8 64

55 55 - 46 = 9 81

59 59 - 46 = 13 169

61 61 - 46 = 15 225

63 63 - 46 = 17 289

66 66 - 46 = 20 400

$\sum(X-Xbar)^{2}$ = 2769

Firstly we will calculate Mean, Xbar = $\frac{\sum X}{n}$

$Xbar = \frac{20+ 23+ 32+ 36+ 41+ 43+ 44+ 45+ 47+ 54+ 55+ 59+ 61+ 63+ 66}{15}$ = 45.93 ≈ 46

Now, Standard deviation formula is given by;

s = $\sqrt{\frac{ \sum(X-Xbar)^{2}}{n-1}}$ = $\sqrt{\frac{ 2769}{15-1}}$ = 14.064 .

Answer from: Quest

1/3 + 1/5 = 8/15.

step-by-step explanation:

hope it

Answer from: Quest

The correct answer is d, hope this

Another question on Mathematics

Mathematics, 21.06.2019 15:30

Solve the system of equations. y= 2x y= x^2 - 15

Answers: 1

Answer

Mathematics, 21.06.2019 15:30

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Answers: 1

Answer

Mathematics, 21.06.2019 17:00

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

Answers: 2

Answer

Mathematics, 21.06.2019 22:00

Type the correct answer in each box. spell all the words correctly, and use numerals instead of words for numbers. if necessary, use / for the fraction bar(s).

Answers: 1

Answer

You know the right answer?

What is the standard deviation of this data set? Use a calculator to help you.
20, 23, 32, 36,...

Questions