The least square method gives the line with the O least sum of the square of the error O highest slope O srmallest variance O least square of sum of error O None of the Choices

Q: One way analysis of variance is used to test for

A: One way analysis of variance also known as ANOVA.

Q: Explain Student t distribution & F distribution?

A: Student t distribution: Shape of a student’s t distribution is bell shaped curve with mean zero and…

Q: reasons why the standard error decreases as the sample size increases .

A:

Q: Which of the four sets of data represents a normal distribution? O (1, 2, 3, 3, 3, 2, 1) {-10, -8,…

A: We have given that the four sets of data. Here we need to find out that which one showing the normal…

Q: 4- Variance is square of a) Range b) Standard Deviation 5- For the set of data 5, 5, 5,5,5,5 the…

A:

Q: What does sample variance measures in F test?

A: F-test is used to test whether the observations in two groups have same variability. Let X1, X2, …,…

Q: g control variates

A: Given as, θ=∫0 1xe-x22  dx

Q: Defintion of "Standard Error"

A: Sample is the subset of population that resembles the characteristic of the population. The unknown…

Q: Inferential statistics is the branch of statistics that draws conclusions about (answer) based on…

A: There are two branches in statistics: Descriptive statistics  Inferential statistics

Q: How do you find z-score with only a standard deviation and the simple mean? They aren't providing…

A: Let us assume we have a population which is normally distributed with mean µ and standard deviation…

Q: True/False   the sampling distribution of the mean will have the same mean as the original…

A: As standard deviation of the sampling distribution of the sample mean is σnwhich is not equal to σ

Q: Prepare a frequency table with class interval of 10 kg. and first class as 40-50. Also find out the…

A:

Q: The standard normal distribution can be used to calculate probabilities for a normally distributed…

A: Normal dist. has a bell-shaped curve.

Q: Describe about the three important properties of the sampling distribution of the mean.

A:

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: Describe the standard error of the point estimate S, and what it means? (for standard variation of…

A: The standard error of the point estimate S , is the approximate standard deviation of a statistical…

Q: When we are running an anova or a t-test, we are comparing the dependent variable across categories…

A: Here when we use Anova and t-test generally we use for averages.

Q: Sampling distribution only applies for a single sample True False

A: We have given that,  Sampling distribution only applies for a single sample?

Q: Z= 123 - 105 / 15  Second Part is a fraction. This is statistics to find the normal curve, please…

A:

Q: Describe a continuous psychological variable and a population you would like to study.  Given your…

A:

Q: Explain please!! It's for the mock exam, i already have the anwers but I need the procedure (it's…

A: Given:population mean μο = 15sample size n = 20sample mean x̄ = 17.8sample standard deviation s =…

Q: Including an interaction term between two independent variables, X1 and X2, allows for the…

A: Statement : Including an interaction term between two independent variables, X1 and X2, allows for

Q: What is the new version of standard error?

A:

Q: Compare z-test with t-test and explain how and why a t-distribution is different from a…

A: The z test is used to compare the hypothesis testing of sample mean with population mean either the…

Q: Introduction and explain the Test of hyphotesis on a single variance

A: A test of a single variance assumes that the underlying distribution is normal. The null and…

Q: Compute test statistic (Independent t-score)             Pooled variance S2p:…

A: 1. Pooled variance S2p: Sp2=SS1+SS2df1+df2=932+70613+13 (df=n-1)=63 Standard error:…

Q: If the median of a set of data is equal to the mean, then the data are chi-square distributed the…

A: The study is about the median of a set of data is equal to the mean.

Q: Use the Central Limit Theorem to find the mean and standard error of the mean of the sampling…

A: Given that  Sample size n =26 Population mean μ =250 Standard deviation =59

Q: Describe the sampling distribution of the difference between two sample means when large samples are…

A: Sampling Distribution: The sampling distribution of the difference between Two mean shows The…

Q: Select all the appropriate names for Type I error. | false negative | consumer's risk | false…

A: False positive is the appropriate name for type 1 error.

Q: How will you test the difference between the variances? * No need to test differences. Standard…

A: There is always some contention about the value of a parameter or the relationship between…

Q: Compute test statistic (Independent t-score)             Pooled variance S2p:…

A: 1.  The formula for pooled variance is given by : S2p=(n1-1).s21+(n2-1).s22n1+n2-2=SS1+SS2n1+n2-2…

Q: When do we use a mean and SD to define a continuous variable distribution?

A: Given information: For a continuous variable distribution with specified mean and standard…

Q: Explain kurtosis of the distribution?

A:

Q: The choice of classes in a histogram can change how the distribution appears has no impact on the…

A: A histogram is a graphical representation of quantitative data used to classify data into grouped…

Q: find the value of the variance, What percentage of values are greater than 7 modes is, find the…

A: Given: Class Frequency 745-750 3 750-755 3 755-760 4 760-765 6 765-770 5 770-775 6…

Q: Eomally distributed with a mean of 500 and a standard deviation of 100. Tom wants to be admitted to…

A: Solution

Q: The mean of Binomial distribution is 3 and variance is. Find P(1 < x < 6)

A:

Q: Which BEST describes the shape of the distribution?

A: Which BEST describes the shape of the distribution?   Uniform   Skewed right   Skewed left…