What correlation tells about relationship of instruments

Assignment Help Basic Statistics
Reference no: EM13137194

Dr. Zak also gave his students the Beck Depression Inventory (BDI). The correlation between his test and the BDI was r =.67. Evaluate this correlation. What does this correlation tell us about the relationship between these two instruments?

Reference no: EM13137194

Questions Cloud

Calculate the activation energy for diffusion : calculate the activation energy for diffusion for a system where the diffusion coefficient doubles its value from 700k to 1200k. R=8.314J/molk.
Explain piston-cylinder assembly undergoes a constant : Refrigerant R-134a vapor in a piston-cylinder assembly undergoes a constant-pressure process from saturated vapor at 800 kPa to 50 ºC.
Problem regarding bankruptcy : During 2010, one of the customers of Klote company declared bankruptcy. This customer had been a major purchaser of Klote's products and had owed $40,000 on account to Klote (a material portion of its receivables) at the time of bankruptcy.
How many minutes will it take for the heater to heat : Portable heater transfers 255 W to 5.5 L water, where 1 W = 1J/s. How many minutes will it take for the heater to heat 5.5 L water from 25 degrees C to 42 degrees C? Assume water has density of 1.0 g/mL
What correlation tells about relationship of instruments : BDI was r =.67. Evaluate this correlation. What does this correlation tell us about the relationship between these two instruments?
What are the amounts in grams of feo in original sample : A mixture of FeO and Fe2O3 with a mass of 10.0 g is converted to 7.43 g Fe of pure Fe metal. What are the amounts in grams of FeO and Fe2O3 in the original sample
Corporate organization & the role of it : Corporate Organization & the Role of IT
Analysis of potential terrorist groups posing threat to us : Select at least two terrorist groups, besides Al-Qaeda and the Al Jihad terrorist groups, that possess both the motive and capability to implement a terrorist attack on the United States.
Explain steam enters a turbine operating at steady-state : Steam enters a turbine operating at steady-state at 700 ºF and 600 lbf/in2 and leaves at 0.6 lbf/in2 with a quality of 90%. The turbine develops 12,000 hp

Reviews

Write a Review

Basic Statistics Questions & Answers

  Find regression lline and confidence interval

Suppose we have the following information from a simple regression: What is the coefficient of determination? What is the correlation coefficient?

  Estimate standard error for estimated slope coefficient

The "t-statistic" for testing whether the slope parameter was unity or not was -3.6. What is the estimated standard error for the estimated slope coefficient?

  Determine required sample size for standard iq test

The standard IQ test has a mean of 100 and a standard deviation of 13. We want to be 98% certain that we are within 2 IQ points of the true mean. Determine the required sample size.

  Sampling mean and population mean

Drug manufacturer knows that for a certain antibiotics, the average number of doses ordered for a patient is 20. Steve Simmons, a salesman for the company

  Find values for the mean and variance of x

Find values for the mean and variance of X. Using a distribution approximation, calculate the probability that there are more than 10 faulty disks in a box of 500 disks.

  Evaluate data using appropriate test for significance

The intensity and frequency of hurricanes increases by 2% over the historical projections and claims increase proportionately. Evaluate data using the appropriate test for significance. Rationale for using the test is clear.

  Nilpotents and zero divisors

Let x be a nilpotent element of the commutative ring R i.e. x^m for some positive integer m. Prove that x is either zero or a zero divisor

  Find cutoff and the score of the sample

Using the .05 level, what should the researcher conclude? Solve this problem explicitly using all five steps of hypothesis testing.

  Confidence levels and margin of error

The mayor of a small town would like to know whether a local bond issue is likely to pass or not. He mails a survey to 500 randomly selected voters.

  Hypothesis testing-confidence interval-population means

For any hypothesis test, if the value of a parameter being tested falls outside the confidence interval for the same level of a, the correct decision is to reject the null hypothesis. Is this True or False?

  Analysis of confidence interval

A random sample of 80 observations from a normally distributed population produced a mean x(bar over the x)= 22.6 . Find a 95% confidence interval for the population mean m if the population standard deviation

  Tendered for two independent contracts

A firm has tendered for two independent contracts. It estimates that it has probability 0.4 of obtaining contract A, and probability 0.1 of obtaining contract B. Find the probability that the firm:

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!

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