If the industry has an average cash deposit of 2100, which bank is performing better? Which bank is more consistent (coefficient of variation). Comment on the shape of the two distributions in a practical sense.

Q: Why is the Method of Moments estimator, in mathematical statistics, consistent?

A: Given that:  Method of Moments estimator, in mathematical statistics:

Q: The two types of variance that can occur in our data are A. Independent and dependent

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: The mean weight of 1000 students at a certain high school is 140 pounds and the variance is 100…

A:

Q: When the data has extreme highs or lows, which is the best measure of central tendency? What is the…

A:

Q: To obtain a maximum amount of variance, an item ought to have a degree of difficulty of what?

A: To obtain a maximum amount of variance an item ought to have a degree of difficulty is the number of…

Q: Based on this graph what was the approximate distribution of the averages?  X~___(___,___)

A: Central limit theorem (CLT): According to CLT, for a given sufficiently large sample size from a…

Q: as sample size gets smaller, what happens to the magnitude of the correlation necessary for…

A: Correlation :  Correlation describes the relationship between two quantitative variables .…

Q: What is meant by saying that a variable has a chi-square distribution?

A: Chi-square distribution: If the distribution of the variable has a special type of right skewed…

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

A:

Q: how to find the variance?

A: Variance is a measure of variability. It is computed by the average of squared deviations from the…

Q: what is its distribution, its mean and its variance?

A:

Q: If the weights are normally distributed, what is the z-score with a weight of 63?

A: Given Information:Mean, μ=70 kgStandard Deviation, σ=6 kg

Q: What is the variance of X

A: here given continuous probability density function  c(1- x2)           -1 ≤x ≤ 10…

Q: If x is normal with mean and variance, find

A: Given Data: X is random variable   X~ Normal (μ, σ2)

Q: Is there a significant difference at =α0.01 in the mean heights in feet of waterfalls in Europe and…

A: State the Null and Alternate Hypothesis.

Q: What formula is used to gain information about an individual data value when the variable is…

A: Solution: 6. Let X be the random variable. From the given information, X is normally distributed.

Q: If a data set has 25 values and a standard deviation of 7.4, then the variance is?

A: Given: Standard deviation = 7.4

Q: State three examples where similar averages are associated with very different distributions Go…

A: Given :  State three examples where similar averages are associated with very different…

Q: What is the variance of the following data( 1, 2, 3, 4, and 5)?

A: According to the given information in this question We need to calculate the value of variance

Q: The difference between the largest and the smallest data values is the А. variance В. interquartile…

A:

Q: Suppose that insurance companies did a survey. They randomly surveyed 450 drivers and found that 310…

A: Number of drivers who claim that they always buckle up, x=310. Number of drivers who were surveyed,…

Q: The . distribution might be used if one cannot guess much about the process to involve in a…

A: If we know only the minimum and maximum values of the data then the most useful distribution for the…

Q: A population is normally distributed with µ = 145 and σ = 20. Which is the percentile rank for X =…

A:

Q: Find the variance of these data

A: From the given given sample data : n=5 , ƩX=105 , ƩX2=2333  Our aim is to find the sample variance

Q: If you have a Pearson correlation coefficient of .30, what is the proportion of variance accounted…

A:

Q: coefficients

A: X y 58.5 -100.8 59.9 771.6 75 -1365.4 60.6 -660.3 66.8 1306.9 63.5 1061.3 57.8 -645.3…

Q: kindly compare  the variances  between these  graphs

A: Variance and standard deviation: Both the variance and the standard deviation are base d on how much…

Q: The accounting department analyzes the variance of the weekly unit costs reported by two production…

A:

Q: The proportion of a in the tail of a gold distribution can be never be more than .50 true or false

A: We have to find given statement is true or false

Q: Calculate the coefficient of concurrent deviations for the following data

A: Let X denote the Supply and Y denote the Demand. We have to calculate the coefficient of concurrent…

Q: What is your best estimate of the correlation coefficient shown here?

A: A scatter plot provides the idea about the form, direction, and strength of the relationship between…

Q: The weekly income for a taxi driver during the first three weeks of lock down were recorded as…

A: Given, The weekly income for a taxi driver during the first three weeks of lockdown was recorded as…

Q: What is the Importance of Variability?

A:

Q: What is the Fratio for these data?

A:

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

A:

Q: Based on the hourly incomes (in US dollars) of employees in two different branches at Citibank,…

A: Variability refers to the spread of the data . It allows us to compare two datasets.

Q: Give an example of a distribution that might be  non-normal.

A: Any skewed distribution would be the example of non-normal distribution, for example chi-square, or…

Q: is 32, the estimate of the variance of the model errors is

A: Given: multiple regression model with no of regressors k=3 and sample size n=20  also error sum of…

Q: Determine the mean and the variance of X.

A: Given that  f(x) = 0.125 x    for 0&lt;x&lt;4   We know that  Mean = E(x) = ∫x.f(x) dx variance V(x)…

Q: discuss the shape of the distribution of the variable  WEIGHT.

A: From histogram we want to tell the shape of distribution

Q: It is the more reliable average when there are extremely large or extremely small values.

A: Answer is  MEDIAN

Q: Based on this graph what is the approximate distribution of data?  X~___(___,___)

A: From the data given,we try to create the histogram of the data.

Q: An inherest problem with using moving averages is the "lag" component, which can be improved by…

A: Introduction: All trend following indicators of time series, such as moving average methods, have 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: In analysis of variance, the F-ratio is a ratio of

A: F ratio is a ratio of 2 variances or two mean squares. Mean squares are simple variances that…

Q: Once the correlation coefficient is known, how can we find the amount of the shared variance?

A: Concept:  correlation coefficient measures the degree of linear relationship between two variables.

Q: If covariance between X and Y variables is 10 and the variances of X and Y are respectively 16 and…

A: The objective is to find correlation coefficient

Q: Can the measure of central tendency tell  a researcher how spread out the scores are in a…

A: Introduction:A measure of central tendency helps to identify the location of a dataset, whereas a…

Q: If the probability of hitting an object is 0.8, what would the variance be?

A: Given problem Given that   If the probability of hitting an object is 0.8, what would the variance…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.