Question

The graph below shows the heights and arm spans of students in a classroom. Height and Arm Span of Students Based on the graph, which is the best prediction of the height of a student with an arm span of 143 cm?

Answer 1

Answer:

143 cm

Step-by-step explanation:

Using the graph attached, it follows that the arm span is directly proportional to the height of students. Evidently, when the height is 160 the arm span is also 160, other values follow the same order such as 180. Marking at the point when arm span is 143 from the graph, the point coincides with height of 143 cm. Therefore, the height is 143 cm

Answer 2

The best prediction of the height of a student with an arm span of 143 cm is 143 cm

Step-by-step explanation:

The missing graph is attached

The graph below shows the heights and arm spans of students in

a classroom

• The x-axis represents the height in cm
• The y-axis represents the arm span in cm

We need to find the height of a student with an arm span of 143 cm

∵ The graph does not contain the value of the given arm span

∴ We will use the line best fit (sold line in the attached graph) to find

   the best predication of the height

∵ The line passes through points (150 , 150) and (160 , 160)

- The x-coordinates are equal the y-coordinate

∴ The equation of the line is y = x

∵ The arm span of a student is 143 cm

∵ y represents the arm span of a student

∴ y = 143

- Substitute the value of y in the equation of the line best fit

∵ y = x

∴ 143 = x

∵ x represents the height of a student

∴ The height of the student is 143 cm

The best prediction of the height of a student with an arm span of 143 cm is 143 cm

Learn more:

You can learn more about line best fit in brainly.com/question/8955867

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