Homework Answers
Ans:
a)Option C is correct.
b)
| x | y | xy | x^2 | y^2 | |
| 1 | 100 | 100 | 1 | 10000 | |
| 2 | 950 | 1900 | 4 | 902500 | |
| 3 | 1350 | 4050 | 9 | 1822500 | |
| 4 | 1450 | 5800 | 16 | 2102500 | |
| 5 | 1850 | 9250 | 25 | 3422500 | |
| 6 | 2200 | 13200 | 36 | 4840000 | |
| Total= | 21 | 7900 | 34300 | 91 | 13100000 |
correlation cofficient,r=(6*34300-21*7900)/SQRT((6*91-21^2)*(6*13100000-7900^2))=0.968
c)strong positive linear correlation
Add Answer to:
This Question: 1 pt 3 of 4 (0 complete) ? This Qu For the following data...
For the following data (a) display the data in a scatter plot, (b) calculate the correlation...
For the following data (a) display the data in a scatter plot, (b) calculate the correlation coefficient r, and (c) make a conclusion about the type of correlation. The ages (in years) of 6 children and the number of words in their vocabulary Age, x 1. 2 3 4 5 6 Vocabulary size, y 500 450 1350 1750 2300 2300 (a) Choose the correct scatter plot below. A. B. c. D. 2350+.. 7 2350- 2350- Vocabulary Age Vocabulary Vocabulary ....
For the following data (a) display the data in a scatter plot, (b) calculate the correlation...
For the following data (a) display the data in a scatter plot, (b) calculate the correlation coefficient r, and (c) make a conclusion about the type of correlation. The ages (in years) of 6 children and the number of words in their vocabulary Age, x 1 2 3 4 5 6 Vocabulary size, y 300 450 1500 1500 2300 2400 a Ag Vocab Vocab Vocabi . 2450 Vocabulary Age Age Age (b) The correlation coefficient r is (Round to three...
Find the margin of error for the given values of c, s, and n. c 0.90,...
Find the margin of error for the given values of c, s, and n. c 0.90, s-2.7, n 29 Click the icon to view the t-distribution table. The margin of error is . (Round to one decimal place as needed.) Which value of r indicates a stronger correlation: 0.846 or0.933? Explain your reasoning. Choose the correct answer below A. r=-0.933 represents a stronger correlation because l-0.939 > 10.845. B. r0.846 represents a stronger correlation because 0.846> -0.933. C.-0.933 represents a...
For the following data (a) display the data in a scatter plot, (b) calculate the sample...
For the following data (a) display the data in a scatter plot, (b) calculate the sample correlation coefficient r, and (c) make a conclusion about the type of correlation. Use technology. The earnings per share (in dollars) and the dividends per share (in dollars) for six medical supplies companies in a recent year are shown in the data set below. a) choose the correct scatter plot. Use technology. (b) The correlation coefficient r is _____ (Round to three decimal places...
For the following data (a) display the data in a scatter plot, (b) calculate the sample correla...
For the following data (a) display the data in a scatter plot, (b) calculate the sample correlation coefficient r, and (c) make a conclusion about the type of correlation. Use technology. The earnings per share (in dollars) and the dividends per share (in dollars) for six medical supplies companies in a recent year are shown in the data set below. a) choose the correct scatter plot. Use technology. (b) The correlation coefficient r is _____ (Round to three decimal places...
The accompanying table shows the ages (in years) of 11 children and the numbers of words...
The accompanying table shows the ages (in years) of 11 children and the numbers of words in their vocabulary. Complete parts (a) through (d) below. ... (a) Display the data in a scatter plot. Choose the correct graph below. A. 0246806001200180024003000Age (years)Vocabulary size A scatter plot has a horizontal axis labeled Age in years from 0 to 8 in increments of 1 and a vertical axis labeled Vocabulary size from 0 to 3000 in increments of 300. The following 11...
For the following data (a) display the data in a scatter plot, (b) calculate the sample...
For the following data (a) display the data in a scatter plot, (b) calculate the sample correlation coefficient r, and (c) make a conclusion about the type of correlation. Use technology. The eamings per share (in dollars) and the dividends per share (in dollars) for 6 medical supplies companies in a recent year are shown in the data set below. Earnings per share, x 2.74 5.05 Dividends per share,0.56 2.39 4.53 3.02 3.73 2.25 1.46 0.89 1.06 0.27 v (a)...
The accompanying table shows the ages (in years) of 11 children and the numbers of words...
The accompanying table shows the ages (in years) of 11 children
and the numbers of words in their vocabulary. Complete parts (a)
through (d) below.
Questions and tables are attached
Age, x Vocabulary size, y 260 550 1100 2100 2500 680 2300 270 1200 2400 4 4 Critical Values for the Pearson Correlation Coefficient The correlation is significant when the absolute value of is greater than the value in the table α 0.05 0.950 0.878 0.811 0.754 0.707 0.666 0.632...
This Question: 1 pt 15 of 15 (1 complete) This Test: 15 Assume that a sample...
This Question: 1 pt 15 of 15 (1 complete) This Test: 15 Assume that a sample of bivariate data yields the correlation coefficient indicated Use the table on the right for the specified sample sze and level of significance to determine whether a linear correlation exists -0.01 0.990 0.959 Correlation coefficient, (r=0.05 0.950 0.878 0.811 0.754 0.707 0.666 0.632 n 4 5 6 7 8 9 10 T=0.73 when n = 10 ata=0.01 0.917 0.875 0.834 0.798 0.765 Does a...
This Question: 1 pt 10 of 11 (9 complete) This Test: 11 pts possible c Question...
This Question: 1 pt 10 of 11 (9 complete) This Test: 11 pts possible c Question Help em The following are the age and price in hundreds) data for a certain type of car Age (x 7 6 7 3 2 4 4 Price 267 260 280 410 364 293 331 311 401 306 a Obtain the linear correlation coeficient by using the computing formula b. Interpret the value or in terms of the linear relationship between the two variables....
For the following data (a) display the data in a scatter plot, (b) calculate the correlation coefficient r, and (c) make a conclusion about the type of correlation. The ages (in years) of 6 children and the number of words in their vocabulary Age, x 1. 2 3 4 5 6 Vocabulary size, y 500 450 1350 1750 2300 2300 (a) Choose the correct scatter plot below. A. B. c. D. 2350+.. 7 2350- 2350- Vocabulary Age Vocabulary Vocabulary ....
For the following data (a) display the data in a scatter plot, (b) calculate the correlation coefficient r, and (c) make a conclusion about the type of correlation. The ages (in years) of 6 children and the number of words in their vocabulary Age, x 1 2 3 4 5 6 Vocabulary size, y 300 450 1500 1500 2300 2400 a Ag Vocab Vocab Vocabi . 2450 Vocabulary Age Age Age (b) The correlation coefficient r is (Round to three...
Find the margin of error for the given values of c, s, and n. c 0.90, s-2.7, n 29 Click the icon to view the t-distribution table. The margin of error is . (Round to one decimal place as needed.) Which value of r indicates a stronger correlation: 0.846 or0.933? Explain your reasoning. Choose the correct answer below A. r=-0.933 represents a stronger correlation because l-0.939 > 10.845. B. r0.846 represents a stronger correlation because 0.846> -0.933. C.-0.933 represents a...
For the following data (a) display the data in a scatter plot, (b) calculate the sample correlation coefficient r, and (c) make a conclusion about the type of correlation. Use technology. The eamings per share (in dollars) and the dividends per share (in dollars) for 6 medical supplies companies in a recent year are shown in the data set below. Earnings per share, x 2.74 5.05 Dividends per share,0.56 2.39 4.53 3.02 3.73 2.25 1.46 0.89 1.06 0.27 v (a)...
The accompanying table shows the ages (in years) of 11 children
and the numbers of words in their vocabulary. Complete parts (a)
through (d) below.
Questions and tables are attached
Age, x Vocabulary size, y 260 550 1100 2100 2500 680 2300 270 1200 2400 4 4 Critical Values for the Pearson Correlation Coefficient The correlation is significant when the absolute value of is greater than the value in the table α 0.05 0.950 0.878 0.811 0.754 0.707 0.666 0.632...
This Question: 1 pt 15 of 15 (1 complete) This Test: 15 Assume that a sample of bivariate data yields the correlation coefficient indicated Use the table on the right for the specified sample sze and level of significance to determine whether a linear correlation exists -0.01 0.990 0.959 Correlation coefficient, (r=0.05 0.950 0.878 0.811 0.754 0.707 0.666 0.632 n 4 5 6 7 8 9 10 T=0.73 when n = 10 ata=0.01 0.917 0.875 0.834 0.798 0.765 Does a...
This Question: 1 pt 10 of 11 (9 complete) This Test: 11 pts possible c Question Help em The following are the age and price in hundreds) data for a certain type of car Age (x 7 6 7 3 2 4 4 Price 267 260 280 410 364 293 331 311 401 306 a Obtain the linear correlation coeficient by using the computing formula b. Interpret the value or in terms of the linear relationship between the two variables....
Most questions answered within 3 hours.
-
Your task is to design the page table for the 32bit Pentium
microprocessor. Answer the following...
asked 35 seconds ago -
Although Epicurus advocates pursuing pleasure for the
good life, discuss a few reasons why he does...
asked 16 minutes ago -
Problem 1: Present entries to record the selected transactions
described below:
(a)
Issued $2,790,000 of 5-year,...
asked 22 minutes ago -
Using technology to support HR activities increases:
a.
the efficiency of the administrative HR functions.
b....
asked 23 minutes ago -
1. List the features used to classify leaf
types.
2. List some characteristics that are shared...
asked 28 minutes ago -
The three elements of Value Proposition, Key Customers, and
Capabilities operate within an environment. Which of...
asked 31 minutes ago -
Katelynn, a physician, earns $200,000 from her medical practice
in the current year. She receives $45,000...
asked 38 minutes ago -
Each row of the table below describes an aqueous solution at
25°C
.
The second column...
asked 43 minutes ago -
A horizontal wire is at y = 0. Current travels in the +x
direction. The magnetic...
asked 43 minutes ago -
Let X be a continuous random variable whose PDF is Let X be a
continuous random...
asked 1 hour ago -
Martinez Company’s relevant range of production is 7,500 units
to 12,500 units. When it produces and...
asked 1 hour ago -
A football with a mass of 1.2 kg is kicked from ground level to
a height...
asked 1 hour ago