Question: Correct definition for each item. Linear correlation analysis no correlation Correlation positive correlation negative correlation Dispersion diagram Linear regression Linear correlation coefficient Shows the behavior

Correct definition for each item.

  1. Linear correlation analysis
  2. no correlation
  3. Correlation
  4. positive correlation
  5. negative correlation
  6. Dispersion diagram
  7. Linear regression
  8. Linear correlation coefficient
  • Shows the behavior of the values
  • There is no relationship between x and y
  • y increases
  • y decreases
  • Numerical measure of the linear relationship between two variables
  • Measure the strength of a linear relationship between two variables
  • mathematical relationship between two variables
  • X increases and there is a shift in the values of y

2-In a statistics course, the times it took ten students to answer an exam and the points obtained were collected. Construct the ordered pairs and the scatter plot. Explain the constructed diagram. (10 pts. each = 20)

Alumns

1

2

3

4

5

6

7

8

9

10

Time

27

22

15

35

30

52

35

55

40

40

Points

30

26

25

42

38

40

32

54

50

43

a-The diagram shows that as time decreases, the points increase which is a positive slope. 3 answers 12% No answer, (Wrong answer) No answer

b-The diagram shows that as time increases, the points increase, which is a positive slope.

c-The diagram shows that as time increases, the points increase which is a negative slope.

d-The diagram shows that as time increases, the points decrease so that there is no slope.

3-The following diagram shows the monitoring of a pediatrician regarding the growth of a child in centimeters:

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