1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Schach [20]
3 years ago
8

A researcher records the following scores on a working memory quiz for two samples. Which sample has a larger standard deviation

? Sample A: 2, 3, 4, 5, 6, 7, and 8 Sample B: 4, 5, 6, 7, 8, 9, and 10
Mathematics
1 answer:
Natalka [10]3 years ago
4 0

Answer:

Standard deviations of both sets are equal

Step-by-step explanation:

We calculate the standard deviations for each sample set

For A

We calculate mean = (2+3+4+5+6+7+8)/7 = 35/5 = 7

We calculate deviations from the mean I.e each element in data set minus mean

x (x-mean)

2 -3

3. -2

4. -1

5. 0

6. 1

7 2

8. 3

If we look closely, we see that the sum of deviations is 0 , hence our standard deviation would be value zero too. This means there is no deviation about the mean

For the second set too, we calculate the mean = 4+5+6+7+8+9+10 = 49/7 = 7

We calculate the deviations too

X. X-mean

4. -3

5 -2

6 -1

7 0

8. 1

9 2

10. 3

Adding sum of deviations, we can see that the S.D is zero here too

Hence, the S.D of both data sets are equal

You might be interested in
Hello everyone, need help on this, select all the correct answers that are equivalent.
mihalych1998 [28]

9514 1404 393

Answer:

  see attached

Step-by-step explanation:

You can perform the division and look at the quotient and remainder to convert an improper fraction to a mixed number.

  23 ÷ 6 = 3 r 5   ⇒   23/6 = 3 5/6 ≠ 4 1/6

  11 ÷ 4 = 2 r 3   ⇒   11/4 = 2 3/4 ≠ 2 1/2

  35 ÷ 4 = 8 r 3   ⇒   35/4 = 8 3/4

  15 ÷ 8 = 1 r 7   ⇒   15/8 = 1 7/8

  40 ÷ 12 = 3 r 4   ⇒   40/12 = 3 4/12 = 3 1/3

5 0
3 years ago
Rename the fraction 2/5 using tenths and hundredths​
Viefleur [7K]

Answer:

20/50

Step-by-step explanation:

i think

5 0
3 years ago
On robertos shelf are:
Minchanka [31]
Total books = 6 + 5 + 4 + 3 = 18
Adventure books = 3

P(Adventure books) = 3/18 = 1/6

Answer: 1/6
7 0
3 years ago
Read 2 more answers
What is the domain of F(x) = 2(x + 5)? Explain
WINSTONCH [101]
Domain of 2(x + 5) is all real numbers.
6 0
3 years ago
8. Jackie is selling cookies as a
dem82 [27]
Can you tell how much she selled? Then I can answer it
5 0
2 years ago
Other questions:
  • Solve 3y + 11 = - 16​
    6·1 answer
  • 10 3/4*5 1/4*9 1/2 as a mixed number
    5·1 answer
  • A rectangle has a height of 7 and a width of 2x^2 – 3.
    13·2 answers
  • Look at the following sequence. 128, 320, 800, 2000, . . . If it is a geometric sequence, choose the common ratio. If it is not
    12·2 answers
  • If Mark uses three force of a tablespoon of coffee to make 1/2 cup of coffee how much would he need to make one cup of coffee
    13·2 answers
  • A life boat leaves a ship and floats 20 miles west and 9 miles north. If the ship's location represents the pole, what are the p
    13·1 answer
  • Help me fast
    14·1 answer
  • Find the value of x:
    5·2 answers
  • In a survey of 1,600 people who owned a certain type of car, 1,120 said they would buy
    12·1 answer
  • 9x-3&gt;5x+17<br> How would i solve this step by step
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!