1. Unit 4 Mathematics
Created by Educational Technology Network

2. Review
Level 1
Level 2
Level 3 10 20 30 40 50

3. Question Review - 10
Definition of mean

4. Answer Review – 10
The average of the data set.

5. Question Review - 20
How do you find the spread?

6. Answer Review – 20
Take the highest data point and subtract the lowest data point from it.

7. Question Review - 30
How do you find the median?

8. Answer Review – 30
Put data in order from least to greatest and find the middle number.
*if the middle is two numbers, add the two numbers and divide by two.

9. Question Review - 40
Definition of mode

10. Answer Review – 40
The number that occurs most in a set of data.

11. Question Review - 50
What is the difference between a dot plot and a histogram?

12. Answer Review – 50 Dot plot uses dots or x’s for every point of data.
Histogram is a bargraph that touches each other.

13. Question
Definition of a function.

14. Answer 1 – 10
For every input, there is one output.

15. Question
How do you find IQR?

16. Answer 1 – 20
You find the difference between the first quartile and the third quartile in a set of data.

17. Question
What is the linear fit?

18. Answer 1 – 30
Any line used to model the pattern in a set of paired data.

19. Question
What is a residual?

20. Answer 1 – 40
The vertical distance between a data point and the line of a regression.

21. Question
What is Correlation Coefficient?

22. Answer 1 – 50
A number that is a measure of the strength and direction of the correlation between two variables.

23. Question
What is a linear model?

24. Answer 2 – 10
A line.

25. Question
What is a scatter plot?

26. Answer 2 – 20
Data that is plotted as points on a graph to show a possible relationship between two sets of data.

27. Question
What is the intercept?

28. Answer 2 – 30
The point which a curve intersects an axis.

29. Question
What is negative correlation?

30. Answer 2 – 40
A relationship between two variables that shows one variable decreases as the other one increases.

31. Question
What is the formula for slope intercept?

32. Answer 2 – 50
Y= mx+b

33. Question
What is the exponential model?

34. Answer 3 – 10
The variable is in the exponent.

35. Question
What is slope?

36. Answer 3 – 20
How steep a line is.

37. Question
What is the definition of bivariate?

38. Answer 3 – 30
Two exponents… X & Y.

39. Question
What is the formula to find slope?

40. Answer 3 – 40
M=Y2-Y1
X2-X1

41. Question
What is positive correlation?

42. Answer 3 – 50
A relationship between two variables that shows both variables increase or decrease together.