Correlation Coefficient
Line of Best Fit
Measures of central tendency
100
How do we represent correlation coefficient in math?
r value or "r"
100
What are the 3 steps to creating a line of best fit equation once you have picked two points?
1)Find the slope (m)
2)Find the y-intercept (b)
3)Use the m and b to create your final equation
100
Identify the mode
10,2,5,7,1,2,3,4,7,9,3
2 and 3 and 7
200
Describe the strength and direction for the scatter plot
Strong and positive
200
Find the slope for the following points (-34,43) and (10,-13)
m=-56/44
200
Identify the median
4,6,9,5,7,2,8,10,8,4,7
7
300
Describe the strength and direction
Weak and negative
300
Find the y-intercept for the equation y=-2x +b that passes through the points (0,-2) and (-5,)8
b=-2
300
Identify the range and mean
10,25,15,35,40,55,40
Range is 45
Mean is 31.4
400
Describe the strength and direction
No correlation
400
Create the line of best fit equation for a scatter plot line that goes through (-3,6) and (6,24)
y=2x+12
400
What is the mode? What is the median?
1,2,3,4,5,6
Mode: 1,2,3,4,5,6
Median: 3.5
500
What are the 3 main measures of central tendency in statistics?
Mean, Median, and Mode