2. This week, we studied the test score Y versus number of hours, X, spent on test preparation, of a student in a French class of 10 students with the collected results shown below Number of hours s...
Regression Analysis 2. The table below gives the amount of tine students in a class studied for a test and their test scores Hours Studied 43 12 11 20 6.2 106 79 75 90 89 97 85 81 0 Test Score a. Use your calculator to find the Linear Regression Equation. b. Use your calculator to find the Correlation Coefficient. c. Using the linear regression equation predict a student's test score i they studied for 8.5 hours. d on the...
The data below are the scores of 10 randomly selected students from a statistics class and the number of hours they studied for the exam. Construct a interval for y, the score on the final exam, given x -7 hours,5.04x+6.11 and s -6.35 허허허허허워 허허허허 Scones, y O55.43 <y< 78.19 O 79.16 <y< 112.34 074.54 < y < 10830 77.21c y < 110.45 The data below are the scores of 10 randomly selected students from a statistics class and the...
9. The data below are the hours spent studying and the corresponding test score earned. Assume that the variables x and y have a significant correlation. Hours spent studying, x 0 2 4 5 5 5 6 7 8 Test score, y 4051 64 69 73 75 9390 95 a) Sketch a scatter plot of the data on provided graph paper segment. (2 pts) b) Describe the type of correlation you see if one exists. (1 pts) c) Find the...
QUESTION 3 [20M] Given the data below, where x is the number of hours playing online game, y is the student's class test marks Student Variable 10 20 12 40 80 60 50 a) Name the two most popular correlation coefficients. b) Which one will you use for the data presented in the above table and why? c) Calculate the correlation coefficient, r d) Make a scatter plot of the data. From the plot, does the word linear really provide...
4. The chart below records number of hours 12 students spent online during the weekend and the Math test scores they achieved the following Monday. Hours on-line (x) 0 7 5 2 3 5 1 3 5 10 7 6 Test scores (y) 96 75 84 82 74 76 85 95 68 50 65 58 Draw the scatter plot Is there a positive, negative or no relationship between the number of hours spent online and the exam grade? Find the...
2. In the past, I have studied the relationship between student study time (number of hours spent studying) and course grade. The data are below, and they are fake data. Is there a relationship between these two variables? Assume . Report all answers to two decimal places if the answer involves decimal places. Hours Studying X Quiz Score Y 17 7 14 6 12 6 10 8 15 9 14 9 9 4 7 6 18 8 5 0 4...
The table below gives the number of hours seven randomly selected students spent studying and their corresponding midterm exam grades. Using this data, consider the equation of the regression line, û = bo + b x, for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate...
What is the relationship between the amount of time statistics students study per week and their test scores? The results of the survey are shown below. Time 13 10 9 9 2 10 12 8 Score 84 83 90 76 74 86 99 85 x-values y-values Find the correlation coefficient: r=r= Round to 2 decimal places. The null and alternative hypotheses for correlation are: H0:H0: ? r ρ μ == 0 H1:H1: ? μ ρ r ≠≠ 0 The p-value is: (Round to...
What is the relationship between the amount of time statistics students study per week and their test scores? The results of the survey are shown below. Time 16 14 15 6 14 15 6 Score 100 89 100 68 99 100 78 x-values y-values Find the correlation coefficient: r=r= Round to 2 decimal places. The null and alternative hypotheses for correlation are: H0:H0: ? ρ r μ == 0 H1:H1: ? μ r ρ ≠≠ 0 The p-value is: (Round to four decimal...
The table below gives the number of hours ten randomly selected students spent studying and their corresponding midterm exam grades. Using this data, consider the equation of the regression line, yˆ=b0+b1xy^=b0+b1x, for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line...