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

In your words demonstrate your understanding on the

In your words, demonstrate your understanding on the following concepts: a) Survival analysis b) Life table c) Kaplan-Meier curve d) Logrank test e) Negative exponential survival distribution f) Cox proportional hazards ...

John is an avid fisherman and wants to know if there is a

John is an avid fisherman and wants to know if there is a correlation between the amount of time he spends fishing and the amount of fish he catches. He decided to keep track of the time he spent at the lake and the amou ...

What is the difference between dependent and independent

What is the difference between dependent and independent variables? On which side of the regression equation does each lie? Describe how Doane's rule relates to the number of allowed independent variables.  Why is this i ...

A recent study that examined bone strength collected data

A recent study that examined bone strength collected data from cadaveric femurs from subjects in three age groups. The data are below. Does mean bone strength differ for the three age groups? Use a 5% level of significan ...

Assignment quantitative methodsquestion 1 a large shipping

ASSIGNMENT: QUANTITATIVE METHODS QUESTION 1: A large shipping company recorded the tonnage shipped weekly across the pacific for 50 weeks. The data is presented in the table below. 530 492 462 379 487 523 600 618 548 431 ...

Probabilities of graduation and publicationprofessors have

Probabilities of Graduation and Publication Professors have hundreds of students in their classes each year. Some professors teach only upper division courses to students who are in their major course of study. Of this g ...

Regression analysiscalculate then explaininterpret the

Regression analysis Calculate then explain/interpret the following 14 tasks/tests using the dependent variable (labeled Y)(Sales) and the independent variables (labeled X1 (Calls), X2 (Time), and X3(Years)). Attached is ...

Please show the work step by step to make it

Please show the work step by step to make it understandable. A random sample of 16 students showed that the variance in the number of hours they spend studying for a final exam was 25 hours 2 Part a. Construct a 95% conf ...

Question the volume of soft drink in plastic bottles is a

Question: The volume of soft drink in plastic bottles is a normal random variable with mean 16 ounces and standard deviation 0.6 ounces. a.) If a bottle is selected at random, find the probability that it contains more t ...

When researchers set their alpha level at 05 they reject

When researchers set their alpha level at .05, they reject the null hypothesis (and conclude that the independent variable has an effect) only if there is less than a 5% chance that the differences among the means are du ...

  • 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

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

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen