User Account

All Pages

Calculate coefficient of correlation between these variables

Assignment Help Basic Statistics
Reference no: EM13949451

The torque, T Nm, required to rotate shafts of different diameters, D mm, on a machine has been tested and recorded below.

D(mm) 6 10 14 18 21 25
T(Nm) 5.5 7.0 9.5 12.5 13.5 16.5

(a) Plot a scatter diagram of the results with diameter of the machine as the independent variable.

(b) Use the method of least squares to determine the linear regression equation that relates the torque to the diameter.

(c) Estimate the value of torque required when the diameter is 16 mm.

(d) Calculate the coefficient of correlation between these variables and comment on your prediction obtained in (c)

Reference no: EM13949451

Questions Cloud

The volume of total gas produced : Pentaerythritol tetranitrate, a.k.a., PETN, is one of the most powerful explosives known. It has a density of 1.77 g/cm3. Find (1) the volume of a 227 g (about 1/2 pound) quantity of the explosive before the explosion and (2) the volume of total gas ..
In how many years will the same sum become nine times : A sum when lent at 15% p.a. simple interest for x years amounted to 18125 rs. When the same sum was lent at 20% p.a. simple interest for (x+2)years it amounted to 25000rs. Find the sum? In what time does a sum double itself at 12.5%p.a. simple intere..
Evaluate the prefix expression : Evaluate the prefix expression when m = 5 and n = 3 and list each step of the solution
Which method do you believe is more effective : Which method do you believe is more effective (written or face-to-face) and why? Please give an example to support your choice?
Calculate coefficient of correlation between these variables : Estimate the value of torque required when the diameter is 16 mm. Calculate the coefficient of correlation between these variables and comment on your prediction obtained in (c).
Input current and power factor of motor : 1. A six-pole, three-phase, 440-V, 60-Hz induction motor has the following model impedances: RS = 0.8 Q XS = 0.7 Q RR = 0.3 Q XR = 0.7 Q Xm = 35 Q Calculate the input current and power factor of the motor for a speed of 1,200 r/min.
Use quantitative methods to support evidentiary findings : Researchers prefer to use quantitative methods to support evidentiary findings. According to Creswell (2009), the purpose of a survey design is to provide numerical trends to sample a population's belief and or opinion regarding a specific study
Identify a business rule in this description : Draw a ERD to represent what you have discovered. Identify a business rule in this description and explain how this business rule is modeled on the E-R diagram. Also draw a data model for this situation using the Vision
Discuss the value of classifying costs by activity category : Discuss the value of classifying and reporting costs by activity category. Calculate the total manufacturing cost to produce 20,000 units of the deluxe model. Present the total cost for each activity category.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Construct a 95 confidence interval and determine whether

production engineers at sinotron believe that a modified layout on its assembly lines might increase average worker

  Customers arrive at a local atm at an average rate of 20

customers arrive at a local atm at an average rate of 20 perhours. assume the time arrivals follow the exponential

  Test claim use hypothesis test claim by constructing an

in a recent nyc marathon 25221 men finished and 253 dropped out. 12 883 women finished and 163 dropped out use a 0.01

  Discrete distribution by estimating probability

What is the probability that a person who has submitted one entry will win the following?

  Using ps test the claim that a majority of hospitalized

medical guidelines recommend that patients who suffer cardiac arrest while hospitalized should receive defibrillation

  From the given data what is the accumulated estimate of the

given two samples a and b with population size of a 30 sample variance of a 45.3 and a population size of b 25 sample

  Use the given data to find the minimum sample size required

use the given data to find the minimum sample size required to estimate the population proportion.margin of error 0.044

  Value of z-score based on mean and standard deviation

The average number of days absent per student per year at West Valley School is 17 days with a standard deviation of 4 days. How many standard deviations from the mean is 6 absent days?

  If 9 square meters are chosen at random for a mosquito

the average number of mosquitos in a stagnant pond is 70 per square meter with a standard deviation of 12. if 9 square

  Consider the trade-off between certainty

After reading the case, answer the following questions, using the table of collected data entitled, "Measurements taken from Neonatal Ward."

  Mean difference test

How can you or your department decide whether or not the variation is important? How could using a mean difference test help?

  When you arrive in your new chevrolet there are already 7

there are 10 adjacent parking places in the parking lot. when you arrive in your new chevrolet there are already 7

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd