Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Complete following in regard to footlength and armspan categories of data set:

a. In the region to right, produce the scatterplot of armspan versus footlength data (remember this means footlength runs along horizontal axis as the independent variable and armspan along vertical axis as the dependent variable.) Based on your scatterplot, briefly describe below your thoughts on whether the "visual" trend between individuals' armspan and footlength appears linear, curvilinear, or has no discernable trend at all. 

b. Complete the following:

i) Comprise the trend line's graph and equation on scatterplot created in part a.  Provide the line's equation below and describe in this context what the "x" and "y" variables represent in equation.

ii) Below, explicitly describe the slope of your trend line and discuss what the value of slope signifies in terms of this context. 

c. Find out the value of correlation coefficient for this paired data. Describe what this value tells you and find out if it implies that there is/isn't statistically significant correlation between two variables of armspan and footlength. (Recall the need to employ table A:6 from text in answering the last portion of this problem.)

d. Using predicition equation from part bi. above, predict armspan of individual whose footlength is 26.5 cm.

e. Finally, critique statement "since the correlation coefficient is statistically significant" then this means that "having large foot causes one to have long armspan,"  Specifically, address issue of "causation" in relation to significant statistical correlation.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M921842

Have any Question? 


Related Questions in Statistics and Probability

There are 1000 students in a high school among the 1000

There are 1000 students in a high school. Among the 1000 students, 150 students take AP Statistics, and 300 students take AP French. 100 students take both AP courses. Let S be the event that a randomly selected student ...

1 what advantage do experiments have over descriptive and

1. What advantage do experiments have over descriptive and correlational studies? 2. A well-designed experiment possesses what three characteristics? 3. Distinguish between qualitative and quantitative levels of an indep ...

Assignment- data description collection and sampling1a

Assignment- Data: Description, Collection, and Sampling 1. A study was conducted of the 12-month earnings per share for two categories of airline companies, with the result shown in the chart below. Based on the data, wh ...

This exercise is similar to given exercise but instead of

This exercise is similar to given Exercise, but instead of announcing the probability of a particular event given their private information, the players announce whether or not the expectation of a particular random vari ...

The population of lengths of aluminum-coated steel sheets

The population of lengths of aluminum-coated steel sheets is normally distributed with a mean of 30.05 inches and a standard deviation of 0.3 inches. What is the probability that average length of a steel sheet from a sa ...

A sample size of 50 is selected from a normal distribution

A sample size of 50 is selected from a normal distribution having a mean of 95 and a standard deviation equal to 15. What is the probability of selecting a sample having a mean exceeding 100?

If the results of a t-test lead you to reject the null

If the results of a t-test lead you to reject the null hypothesis, what is the probability that you have made a Type II error?

A system has two components that operate in parallel at

A system has two components that operate in parallel. At least one of the components must function properly if the system is to function properly. The probabilities of failures for the components 1 and 2 during one perio ...

1 what is validity2 distinguish between face validity

1. What is validity? 2. Distinguish between face validity, construct validity, and criterion-related validity. In general, which kind of validity is least important to researchers? 3. Can a measurement procedure be valid ...

1 what is an interaction2 how many interactions can be

1. What is an interaction? 2. How many interactions can be tested in a 2 x 2 design? In a 3 x 3 design? In a 2 x 2 x 3 design? 3. Why do researchers use expericorr designs?

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro