WHAT IS ROUND OFF ERROR? HOW ROUND OFF ERROR iIS USED?

Q: What are the expected signs of the coefficients based on the data given

A: Given information: The output for multiple linear regression is given.

Q: What is formula for converting a Raw Score to z?

A: The standard normal distribution: A continuous random variable Z is said to follow standard normal…

Q: Can you give an example of how the importance of the goodness of fit test to the chi-square test?

A: Step 1: The goodness of fit test to the chi-square test is a statistical hypothesis, which helps to…

Q: What is a type 1 and type 2 error? How are they related to each other?

A: First of all, we know that there are two types of arises in the testing of hypothesis because, in…

Q: Explain the assumption of homogeneity of variance?

A: Independent Two Samples t-test: Suppose there are two populations independent of one another. A…

Q: Describe about type1 and type 2 errors?

A: During testing,we need to set up two hypothesis between which the testing can be done. A null…

Q: What is formula for z score?

A: A z-score is a score which is computed to find out the number of standard deviations a value is away…

Q: What is a Z score and why is it useful?

A:

Q: Define Type I and Type II errors?

A: Type 1 error - Type 1 error is rejecting the true Null Hypothesis. In this by significance test we…

Q: Explain the differences between a One-Way and a Two-Way Chi-Square Test. Which of these do you think…

A: One Way Chi-Square Test is used to test the general goodness of fit of the data i.e., it checks if…

Q: how do you find the variance

A: Variance:Variance indicates by how much each observation differs from a central point represented by…

Q: Explain Multiple Observation Summary of Z-test?

A: A Z-test is a statistical test, used to determine whether two population means are different when…

Q: What is the factorization theorem in statistic ?

A: The necessary and sufficient condition for a distribution to admit sufficient statistic is provided…

Q: Define type I error, type II error.

A: Type I error (α): The probability of rejecting the null hypothesis when it is actually true is…

Q: Define rigorous statistical analyses.

A: Definition of Statistics as given by Sir R.A.Fisher : The Science of Statistics is essentially a…

Q: What is LSD (least significant difference) test?

A:

Q: Explain how the Chi-square test statistics is calculated and what it tells us about the observed…

A:

Q: Describe about statistical error.

A: In statistics and inference theory, there are various methods through which estimates of true…

Q: How can the split-half reliability be computed

A: When a single variable is measured with a test that consists of multiple items, the internal…

Q: What does the one-sample chi-square test determine?

A: The Chi-square test used with one sample is described as a "goodness of fit" test

Q: What is the advantage of using piecewise interpolation than using Lagrange interpolation?

A: Piecewise linear interpolation is second-order accurate. The Lagrange interpolation formula is a…

Q: What is the key property of Standard Error of Estimate?

A: Introduction: The standard error is a measure of dispersion, based on the sampling distribution of…

Q: What is false discovery rate? How is this calculated?

A: The false discovery rate is the ratio of number of false positive results to the total number of…

Q: What is the formula for statistical power and Type 11 error

A:

Q: why estimation is important in statistics?

A: Estimation is one of the two branches of inferential statistics.

Q: Analysis of Variance can also be called as F-test. true or false?

A: As we know that analysis of variance which is ANOVA . In this we can calculate F - value which is…

Q: Describe how to Convert to Transform Standard Scores?

A:

Q: Explain Univariate Analysis?

A: Univariate Analysis is the analysis of variable. As the name suggests 'uni' means one i.e analysis…

Q: What is formula for Transformed Standard Score?

A: The standard normal distribution: A continuous random variable Z is said to follow standard normal…

Q: What is type II error? Give an example.

A: Type II error occurs when one fail to reject the null hypothesis which is actually false. It is also…

Q: What does Cohen’s d measure? What are type I and type II errors and how are they related?

A: The effect size is a quantitative measure which describes the extent of the experiment being…

Q: Transforming raw scores into z scores allows researchers to

A: By converting a raw score to a z- score, we are expressing that score on a z-score scale, which…

Q: What are the Class 1 error rate and the Class 0 error rate on the test data?

A: Class 1 error rate are false positives on test data Class 0 error rate are false negative on test…

Q: Explain the distinguish between two error rates: (1) the per-comparison error rate and (2) the…

A: Per-comparison error rate (PCER) is the probability of Type I error in the absence of any multiple…

Q: Explain the process of computing the standard error of the estimate based on errors of prediction?

A: The standard error of the mean: The standard error of an estimate is defined as the value of the…

Q: What are soft stats?

A: There are two types of data/statistics. Hard data and soft data/ statistics/number. Hard data are…

Q: do I find the standardized z-score?

A: A z-score gives you an idea of how far from the mean a data point is.

Q: What is the Sum of Squares Formulas for Sample?

A:

Q: Define Type I and Type II error with example?

A: To define Type I error and Type II error.

Q: What is the sensitivity of this test? What is the specificity of this test?

A: In the given table, False positive(FP) = 18 True positive(TP) = 43 False negative(FN) = 0 True…

Q: What distinguishes interpolation from other form of approximation?

A: Interpolation is the process of estimating the value of function for any intermediate value on an…

Q: Explain whether homogeneity of variance is satisfied for this analysis, and be clear on how you…

A: Homogeneity of Variance: Homogeneity of variance (homoscedasticity) is a crucial assumption shared…

Q: What statistics consists of organizing and summarizing information collected while what statistics…

A: Two different type of statistics are discussed here.

Q: How is dfwithin and dftotal calculated in statistics? Please write out words for formulas.

A: Given that

Q: One advantage of transforming x-values (raw scores) to a-score is

A: Raw score can be converted to z score using z score formula.

Q: Describe the step-by step procedure for statistical testing

A: Hypothesis testing : A statistical hypothesis is a hypothesis that can be tested based on observed…

Q: Explain about random error.

A: There are two types of errors random errors and systematic errors.First of all lets see…

Q: Is sampling always reliable?

A: