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Algebra 1- Unit 3: Two Variable Statistics EXIT TICKET Estimate Line of Best Fit
Name Aaron sams
Date:
qquad

qquad

Pd
PdI
qquad
Use a ruler to draw an approximate line of best fit thorough the points.
Slope:
Y-intercept:
Equation:
Positive or Negative Correlation?
Pevitive
Strong or Weak?

Algebra $1$ - Unit $3$ : Two Variable Statistics EXIT TICKET Estimate Line of Best Fit $\newline$ Name Aaron sams $\newline$ Date: $\newline$ Pd $\newline$ PdI $\newline$ Use a ruler to draw an approximate line of best fit thorough the points. $\newline$ Slope: $\newline$ Y-intercept: $\newline$ Equation: $\newline$ Positive or Negative Correlation? $\newline$ Strong or Weak?

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Identify independent and dependent variables

Full solution

Q. Algebra

1

- Unit

3

: Two Variable Statistics EXIT TICKET Estimate Line of Best Fit

\newline

Name Aaron sams

\newline

Date:

\newline

Pd

\newline

PdI

\newline

Use a ruler to draw an approximate line of best fit thorough the points.

\newline

Slope:

\newline

Y-intercept:

\newline

Equation:

\newline

Positive or Negative Correlation?

\newline

Strong or Weak?

Identify Trend for Line: Identify the general trend of the points on the graph to determine where to place the line of best fit. Use a ruler to draw a straight line that has roughly equal numbers of points above and below it, minimizing the distance between the points and the line.
Calculate Slope: Calculate the slope of the line by selecting two points on the line of best fit. Use the formula $(\text{change in } y) / (\text{change in } x) = (y_2 - y_1) / (x_2 - x_1)$ . Suppose the coordinates of these points are $(2,3)$ and $(5,11)$ . Then, the slope = $(11 - 3) / (5 - 2) = 8 / 3$ .
Determine Y-Intercept: Determine the y-intercept by extending the line to where it crosses the y-axis. If the line crosses the y-axis at $y = 1$ , then the y-intercept is $1$ .
Write Equation: Write the equation of the line using the slope-intercept form $y = mx + b$ , where $m$ is the slope and $b$ is the y-intercept. From the previous steps, $m = \frac{8}{3}$ and $b = 1$ , so the equation is $y = \left(\frac{8}{3}\right)x + 1$ .
Observe Correlation Direction: Observe the direction of the line to determine the type of correlation. If the line slopes upwards as it moves from left to right, it indicates a positive correlation.
Assess Correlation Strength: Assess the strength of the correlation by looking at how close the points are to the line of best fit. If most points are near the line, it indicates a strong correlation. If they are widely spread, it indicates a weak correlation. In this case, let's assume it's a strong correlation.

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How many of each model ebike must Georgeland Cycles sell every year to break even?

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