Question

No. of hours spent studying x: 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 7.5 Score obtained in MX in Statistics y: 10, 25, 24, 28, 30, 35, 38, 42, 45, 49 B. Procedure & Questions 1. Create a table with the following five columns using the data given: 2. Below the table, create a scatter plot (graph) of all the points. (Do not connect the points.) Label the axes properly. You may use Desmos or GeoGebra for this. 3. Copy and answer each question. Show your solution. (a) What is ?x ? (b) What is ?y ? (c) What is ?x² ? (d) What is ?y² ? (e) What is ?xy ? (f) Calculate the correlation coefficient, r . Show your complete, step-by-step solution. Round your final answer to two decimal places. (g) Is the relationship strong or weak? Is it positive, negative or zero? (h) What is x? ? (Round your final answer to two decimal places.) (i) What is y? ? (Round your final answer to two decimal places.) (j) Suppose the relationship is significant, calculate the slope of the regression line, b . Show your complete, step-by-step solution. Round your final answer to two decimal places. (k) Calculate the y-intercept of the regression line, a . Show your complete, step-by-step solution. Round your final answer to two decimal places. (l) Find the value of y when x = 100 . Show your step-by-step solution. Round your final answer to two decimal places. 4. Copy the same scatter plot from No. 2, and graph the regression line on the same plot. You may use Desmos or GeoGebra for this. Below this new graph, write the equation of the regression line.

          No. of hours spent studying x: 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 7.5
Score obtained in MX in Statistics y: 10, 25, 24, 28, 30, 35, 38, 42, 45, 49

B. Procedure & Questions
1. Create a table with the following five columns using the data given:
2. Below the table, create a scatter plot (graph) of all the points. (Do not connect the points.) Label the axes properly. You may use Desmos or GeoGebra for this.
3. Copy and answer each question. Show your solution.
(a) What is ?x ?
(b) What is ?y ?
(c) What is ?x² ?
(d) What is ?y² ?
(e) What is ?xy ?
(f) Calculate the correlation coefficient, r . Show your complete, step-by-step solution. Round your final answer to two decimal places.
(g) Is the relationship strong or weak? Is it positive, negative or zero?
(h) What is x? ? (Round your final answer to two decimal places.)
(i) What is y? ? (Round your final answer to two decimal places.)
(j) Suppose the relationship is significant, calculate the slope of the regression line, b . Show your complete, step-by-step solution. Round your final answer to two decimal places.
(k) Calculate the y-intercept of the regression line, a . Show your complete, step-by-step solution. Round your final answer to two decimal places.
(l) Find the value of y when x = 100 . Show your step-by-step solution. Round your final answer to two decimal places.
4. Copy the same scatter plot from No. 2, and graph the regression line on the same plot. You may use Desmos or GeoGebra for this. Below this new graph, write the equation of the regression line.

No. of hours spent studying x: 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6, 7.5
Score obtained in MX in Statistics y: 10, 25, 24, 28, 30, 35, 38, 42, 45, 49

B. Procedure Questions
1. Create a table with the following five columns using the data given:
2. Below the table, create a scatter plot (graph) of all the points. (Do not connect the points.) Label the axes properly. You may use Desmos or GeoGebra for this.
3. Copy and answer each question. Show your solution.
(a) What is ?x ?
(b) What is ?y ?
(c) What is ?x² ?
(d) What is ?y² ?
(e) What is ?xy ?
(f) Calculate the correlation coefficient, r . Show your complete, step-by-step solution. Round your final answer to two decimal places.
(g) Is the relationship strong or weak? Is it positive, negative or zero?
(h) What is x? ? (Round your final answer to two decimal places.)
(i) What is y? ? (Round your final answer to two decimal places.)
(j) Suppose the relationship is significant, calculate the slope of the regression line, b . Show your complete, step-by-step solution. Round your final answer to two decimal places.
(k) Calculate the y-intercept of the regression line, a . Show your complete, step-by-step solution. Round your final answer to two decimal places.
(l) Find the value of y when x = 100 . Show your step-by-step solution. Round your final answer to two decimal places.
4. Copy the same scatter plot from No. 2, and graph the regression line on the same plot. You may use Desmos or GeoGebra for this. Below this new graph, write the equation of the regression line.

Added by Amanda R.

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