Log In Registration
Ask an expert
Mathematics
16.02.2022 12:21
135
224
10
Solved by an expert

(i) Calculate the mean and standard deviation for these weekly incomes. 221 248

(i) Calculate the mean and standard deviation for these weekly incomes.
221 248 251 255 259 263 264 272 291 297 374
Show Answers
probro1167
probro1167
5,0(66 marks)

Mean = 272.3

sd = 37.7

Step-by-step explanation:

Mean = sum/n

(221+248+251+255+259+263+264+272+291+297+374) ÷ 11

= 2995/11

= 272.2727273

Variance = (sum of x²)/n - mean²

[(221²+248²+251²+255²+259²+263²+264²+272²+291²+297²+374²)/11] - (2740/11)²

= (831067/11) - (2995/11)²

= 1419.107438

sd² = variance

sd = sqrt(1419.107438)

sd = 37.67104243

lazarovalle3598
lazarovalle3598
4,9(8 marks)
18ft

Popular Questions about the subject: Mathematics

Go out into your community and find an example of a geometry transformation....
Go out into your community and find an example of a geometry transformation. Take a picture of your example. In your post, share the picture and explain why it’s an example...
Mathematics
07.09.2022 19:53
I have this statistic hw that has to do with fisher information. I...
I have this statistic hw that has to do with fisher information. I don’t even know where to start and it’s 3 parts...
Mathematics
16.11.2022 10:09
If Connor David Joseph Matthew and Forrest Took spring pictures together...
If Connor David Joseph Matthew and Forrest Took spring pictures together today how many different ways can the boys stand in a line...
Mathematics
31.12.2020 03:27
Determine whether the triangle are similar. if similar, State the...
Determine whether the triangle are similar. if similar, State the reason, write a similarity statement, and give the skill factor in lengths are given. ​...
Mathematics
19.02.2022 03:41
Find the height of a prism whose volume is 108 cm3 and the area of...
Find the height of a prism whose volume is 108 cm3 and the area of the base is 15 cm2....
Mathematics
16.07.2020 05:26
Find the volume of each figure....
Find the volume of each figure....
Mathematics
18.01.2023 12:16
State the degree and end behavior of f(x) = 5 + 7x – 9x2 + 4x3. Explain...
State the degree and end behavior of f(x) = 5 + 7x – 9x2 + 4x3. Explain or show your reasoning....
Mathematics
09.08.2021 06:57
***I WILL GIVE BRAINIEST TO THE CORRECT ANSWER** Latasha and Hercules...
***I WILL GIVE BRAINIEST TO THE CORRECT ANSWER** Latasha and Hercules are collecting drones in a ratio of 5:10. If they collected 270 drones altogether, how many drones...
Mathematics
30.04.2021 18:07
Compute the following rational number operations. Show your work line...
Compute the following rational number operations. Show your work line by line. -8.2 +212÷(-6.1+4.9) ​...
Mathematics
13.05.2022 16:55
PLEASE I NEED HELP WILL GIVE 100 POINTS Although there are still occasions...
PLEASE I NEED HELP WILL GIVE 100 POINTS Although there are still occasions when it is required, face-to-face communication seems to be decreasing. In the age of digital...
Mathematics
19.09.2022 04:53

New questions by subject

What is it called when you compare 2 words using like or as...
What is it called when you compare 2 words using like or as...
English
29.08.2022 12:56
What level of organization is shown in the human heart...
What level of organization is shown in the human heart...
Chemistry
14.07.2021 04:54
Hypothesize why dna replication has such accuracy...
Hypothesize why dna replication has such accuracy...
Biology
23.06.2023 20:07
Describe how latitude and longitude coordinates are used to locate...
Describe how latitude and longitude coordinates are used to locate positions on earth...
Biology
02.04.2020 21:28
Which of these organisms lacks nervous tissue? jellyfish. sponge. nematode....
Which of these organisms lacks nervous tissue? jellyfish. sponge. nematode. earthworm....
Biology
03.11.2021 16:34
Change the subject of the formula s = p (1 + rt) to t....
Change the subject of the formula s = p (1 + rt) to t....
Mathematics
17.07.2021 18:02
What is the name of the african american killed on march 5, 1770?...
What is the name of the african american killed on march 5, 1770?...
History
09.12.2021 08:16
Which statements are true? choose all that are correct. a. -8.93 -8.4...
Which statements are true? choose all that are correct. a. -8.93 -8.4 b. -0.7 -6.12 c. 7.1 7.24 d. -3.2 -3.6 any would be awesome!...
Mathematics
23.12.2020 20:29
The shuttle program suffered a disaster in january 1986 with the explosion...
The shuttle program suffered a disaster in january 1986 with the explosion of the...
Biology
08.01.2023 12:53
Fertilization produces a single cell what is it called...
Fertilization produces a single cell what is it called...
Chemistry
15.06.2022 02:25
Find out answers to questions
from an AI-bot
Get full access
Answers
Themes
Family and Home Sport Other Dating, Love, Relationships Health and Medicine Science and Technology Cities and Countries Travel and tourism Food and Cooking Philosophy Style and Beauty Animals and plants Business and Finance Construction and repair Leisure and Entertainment Legal consultation Goods and services Society and Politics Photography and Videography Auto and Moto Art and Culture Computers and Internet Horoscopes, Magic, Divination Work and Career Business Law Spanish SAT Engineering Social Studies Computers and Technology World Languages Mathematics French Biology Arts History Geography Health Chemistry Medicine Physics English Advanced Placement (AP) German
#
#
#
#
# #

We expand our knowledge with many expert answers

Answers