Calculate the standard deviation of X

Q: ind the variance and the standard deviation for x and y in Table 1

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Q: Derive mean and variance of gamma distribution.

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Q: standard deviation of the mean,

A: The given readings are taken with meter strings of the length of the cylinder we know  Standard…

Q: If X follows standard normal distribution then the standard deviation of X equals

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Q: standard deviation for stock Y

A: Here We are trying to develop a strategy for investing in two different stocks. Given standard…

Q: Calculate variançe and standard deviation from the given data,

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Q: The standard deviation of  sample means is a function of both the standard deviation of the…

A: Solution Standard deviation of a sample mean is equal to Sd/✓n Where sd denote the Standard…

Q: Estimate the standard deviation and the average heat-producing capacities of coal from both mines.

A: Average μ=Σxin n=no: of observations Standard Deviation σ= ∑ (x − x)2 / n

Q: How do I find the standard deviation?

A: Measures of dispersion:The variation of data distribution can be identified from the measures of…

Q: . Calculate the standard deviation for

A: Here given grouped data for age and no. Of member

Q: How to find the standard deviation

A: Mean:Mean is a measure of center in case of quantitative data. Mean of a data set is the sum of the…

Q: Calculate the standard deviation

A:

Q: I need help on subpart b - the standard deviation for stock x

A: Given Information: Stock X P(X) -60 0.1 20 0.2 110 0.4 170 0.3 Required: To compute…

Q: Define Standard Error of the Mean.

A: Mean is the ratio of addition of all data points and number of total data points from the data.The…

Q: Let the variance of Y is 4x^2. What is the standard deviation of Y?

A: Given that: The variance of Y is 4x2.

Q: Distinguish Standard Deviation from Mode

A: Given problem Given that

Q: What does the variance of a random variable measure? What is the standard deviation of a continuous…

A: Variance of a random variable measures how far a set of (random) numbers are spread out from their…

Q: Compute the Average Deviation.

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Q: Is it possible to obtain a negative value for the variance or standard deviation?

A: The variance and the standard deviation, which is the square root of the variance are the most…

Q: e mean and standard deviation for these data.

A: Six people were asked to determine the amount of money they were carrying to the nearest dollar.…

Q: Calculate the standard deviation , show it step by step

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Q: mpute the standard deviation of the random var

A: Given that  Probability distribution table Profit (X) Probability P(x) $-1 125216    $1 75216…

Q: Scores on a test have a mean of 8181 and a standard deviation of 1313. Michael has a score of 9393.…

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Q: Find mean and standard deviation of a 'Standardized normal variable'.

A: The pdf of standard normal variable is, f(z)=12πe-z22 ;-∞<z<∞ Standard normal variate: Z=x-μσ

Q: how do i find the standard deviation of this question?

A: Given data: 227 , 123. 102, 235, 250, 202, 243, 111 Range = Maximum value - Minimum value…

Q: find standard deviation if range is 3.

A: Given: Range = 3

Q: ". standard deviation is always positive

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Q: Find variance and standard deviation

A: From the given data we have the computations as, Class boundaries Xi Frequency (fi) fiXi…

Q: Derive mean for gamma distribution?

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Q: A population has a mean of 250 and a standard deviation of 24. What value from the population has a…

A: Solution

Q: The value of the standard deviation will always exceed that of the variance. TRUE OR FALSE

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Q: When standardizing, the mean becomes 0 and the standard deviation becomes 1. True

A: The formula for standard normal score is, z=x-μσHere μ is the mean andσ is the standard deviation.

Q: How I can calculate the standard deviations of each of the two differentassets?

A: Standard deviation is the positive square root of the mean of the squares of the deviations of the…

Q: Square of the standard deviation is called

A:

Q: Define mean absolute deviation?

A: The mean absolute deviation is a measure of descriptive statistics. Here the words "mean" and…

Q: Calculate The mean and standard deviation

A: Given Information :  On the midnight shift, the number of patients with head trauma in an emergency…

Q: Define the mean squared error (MSE)?

A: Mean squared error is the average of the squares of error. It magnifies the error by squaring the…

Q: how to calculate standard deviation

A: Mean:Mean is a measure of center in case of quantitative data. Mean of a data set is the sum of the…

Q: How do I find the standard deviation

A: Given Information: 20% of the clothes are clean i.e., p=0.20 Sample size  n=5   2) Standard…

Q: Assume that scores on a bone mineral desity test are normally distributed with a mean of 0 and a…

A: The scores on a bone mineral density test are normally distributed with mean 0 and standard…

Q: What conclusion can you make base on the standard deviation?

A: Answer:

Q: Give the standard deviation of X1.

A: First we have to calculate the marginal density of X1 and then we will find standard deviation of…

Q: A certain tennis player makes a successful serve 80% of the time. Suppose the tennis player serves…

A: Given that p=probability of success=p=80%=0.80 So, q=1-p=1-0.80=0.20 n=number of serves= 70

Q: A score of is one and one-half standard deviations below the mean

A: Here Given for Normal distribution with  Mean=μ=30 SD=σ=6

Q: Derive the mean and variance of normal distribution. Show your complete solutions.

A: Solution:- Mean of normal distribution The Gaussian pdf is defined as fX(x)=1σ2πexp-(x-μ)22σ2 where…

Q: When the correlation between x and y is –1.0, what will the standard deviation of errors be? Why is…

A: * ANSWER :-  Based on the above information the answer is  as follows

Q: Suppose a population has a mean weight of 180 pounds and a standard deviation of 25 pounds. A sample…

A: Formula : The standard error of the mean  : σ_x̄ = σ/√n

Q: Find the variance and standard deviation. Round the variance to two decimal places and standard…

A: Given A binomial experiment has the given number of trials n and the given success probability p.…