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
Inga [223]
3 years ago
9

On an international​ exam, students are asked to respond to a variety of background questions. For the 41 nations that participa

ted in the​ exam, the correlation between the percentage of items answered in the background questionnaire​ (used as a proxy for student task​ persistence) and mean score on the exam was . Does this suggest there is a linear relation between student task persistence and achievement​ score? Write a sentence that explains what this result might mean.
Mathematics
1 answer:
melamori03 [73]3 years ago
7 0

On an international​ exam, students are asked to respond to a variety of background questions. For the 41 nations that participated in the​ exam, the correlation between the percentage of items answered in the background questionnaire​ (used as a proxy for student task​ persistence) and mean score on the exam was 0.793. Does this suggest there is a linear relation between student task persistence and achievement​ score? Write a sentence that explains what this result might mean.

Answer:

There is a strong positive relationship between student task persistence and achievement score

Step-by-step explanation:

The correlation Coefficient score is used to as a numerical measure to show the strength of relationship or correlation between two linear variables. The correlation score ranges from - 1 to + 1. With positive values depicting a positive relationship and negative values exhibiting a negative relationship between the two variables. The closer the value is to 1 or - 1, the stronger the level of correlation. A correlation value of 0, means no relationship exists between the variables.

The correlation score of 0. 793 is both positive and close to 1. Hence, signifying a strong positive relationship.

You might be interested in
Choose the correct answer. what is the value of d + e when d = 11 and e = -8
devlian [24]
11-8= 3

Hope this helps!
8 0
3 years ago
For what value of x is the perimeter of shape 77cm
sergejj [24]

Answer:

I believe its 11.

8 0
3 years ago
The chain of the Hawaiian Islands can be used to calculate the rate of movement of the Pacific Plate over the last few million y
klasskru [66]

Answer:

9.28 × 10⁻⁴ cm/year.

Step-by-step explanation:

Let d(t₀) represent the initial position of Kauai island = 0 km from the hot spot. at time t = 0 million years. Let d(t₁) represent its final position at time t₁ = 5.1 million years later in the North - west direction. d(t₁)=473 km = 4.73 × 10³ cm. The average speed v = total distance/ total time =[d(t₁) - d(t₀)]/t₁₋t₀ = (4.73 × 10³ - 0)/(5.1 × 10⁶ - 0) =  4.73/5.1 × 10³⁻⁶ = 9.275 × 10⁻⁴ cm/year ≅ 9.28 × 10⁻⁴ cm/year

7 0
3 years ago
Fred loves watermelon and buys 6 of them at the grocery store. If he gives friends 1 1/2 of a watermelon each, how many friends
Georgia [21]

Answer:

4 friends will get watermelon

Step-by-step explanation:

1. 1 1/2 + 1 1/2 = 3

2. 1 1/2 + 1 1/2= 3

3. 3+3=6

4. Now count how many times we added 1 1/2.

5. If you counted correctly, you should've gotten 4.

4 0
3 years ago
25x2-8x=12x-4 <br> Can someone please help me on this ?????
Natalka [10]

Answer: X=2.7

Step-by-step explanation:

25*2-8x=12x-4

50-8x = 12x-4

subtract 50 from both sides

-8x = 12x-54

subtract 12x from both sides

-20x= -54

divide both sides by -20

X=2.7

4 0
3 years ago
Read 2 more answers
Other questions:
  • 7. What is the solution to-(6m+ 8) = 4(17 - m)?
    6·1 answer
  • Jane invested $13,000, a portion earning a simple interest rate of 3 and 1/4th% per year and the rest earning a rate of 3% per y
    12·1 answer
  • A football field is 300 feet long. A sloth moving very quickly travels 60 feet every 5 minutes. Based on this ratio, how many mi
    11·1 answer
  • a saleswoman earns 60% commission on all that she sells. Last month she sold $400 worth of merchandise. How much commission (In
    7·1 answer
  • Round your answer to the nearest hundredth.
    7·2 answers
  • Find the value of g(7) for the function below.
    12·1 answer
  • Which triangle is a 30°-60-90° triangle?<br><br> 1st Triangle<br> 2nd Triangle<br> 3rd Triangle
    8·1 answer
  • Help pls . Thank you very much
    12·2 answers
  • Quiz! <br>5 + 5 + 5 = ? <br><br>Note : <br>nih.​
    13·2 answers
  • What is the slope of the line?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!