how to calculate the variance?

Q: Determine the variance of Z.

A: Helpful formulas (i)VaX=a2VX(ii)VC=0,where c is the constant(iii)VaX+ bY=a2VX+ b2VY

Q: 下riday Day of the Week no. of unit sol0 mon tue wed 4 Thu Sat dNT 3 Sunday 3.

A: Solution-: Let, X-be the number of unit sold We have following table: Day of the week X Monday…

Q: How do you find the Homogeneity of Variance met? How do you know?

A: Homogeneity of variance is an assumption in statistics used both for t and F tests, especially in…

Q: In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the…

A: There are 3 independent samples which are Goliath, Varmint and Weasel. We have to find the variance…

Q: In an experiment to assess the effect of listening to audiobooks while driving, participants were…

A: xx21018103632410091018081105611151369869721969378779691030106090010651134225101310261698627430441108…

Q: Find the variance with solution

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Q: Compute the mean and variance of the following discrete probability distribution. (Round your…

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Q: State the properties of Co- variance;

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Q: What is variance?

A: Variance is a measure of dispersion or spread of a data distribution. Variance of a data…

Q: Why do we calculate sums of squares to find variance?

A: The sum of squares is an important term in statistics. The variance depends on the sum of squares .…

Q: Find the mean and variance of

A: Given that fx=ke-2x,x>0 The value of k is calculated below: ∫0∞f(x)dx=1∫0∞ke-2xdx=1ke-2x-20∞=1…

Q: How to find the variance, explain the formula

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

Q: Given the data set below, calculate the range, mean, sample variance, and sample standard deviation.…

A: Given thatData values :  25 , 35 , 19 , 38 , 16 , 16 , 8 , 29 , 47Sum of data values = 233Number of…

Q: Consider the following frequency table. Frequency 8 4 15 7 21 10 28 11 3 Write down the mode. 2.

A: Using the formula of variance.

Q: What is formula for the variance of the population?

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Q: State the formula for Variance.

A: Equation that defines the population variance σ2=∑(X-μ)2N Here, σ2 is variance, (X-μ) is distances…

Q: How to Reconstruct the Variance step by step?

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Q: Consider a random variable X, with the following empirical pmf. Value X₁ 1 -1 2 O Probability p(x₁)…

A: The probability mass function of X is given.

Q: Example: Application of RV and PMF Peter and Sheila are deciding where to invest the cash gifts they…

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Q: Calculate the Average and the variance

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Q: Explain the variance of the sum or difference of the two variables X and Y ?

A: Variance of sum of two variables: The variance of the sum of two or more random variable is equal to…

Q: Solve for the variance of the weight of all the beans in a box. Also e

A: Let X be the weight of beans that the machine puts into a bag is a random variable with mean 16…

Q: Stock Prices A random sample of stock prices per share (in dollars) is shown. Find the 80%…

A: 7.50,75.37,12.00,28.37,13.88,26.69,14.75,46.12,10.87,40.25,60.50,28.00,28.25,6.94,45.12sample…

Q: Analysis of Variance can be used to test the significant difference of an independent variable and a…

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Q: Younger Adults (average age 31) Older Adults (average age 72) 94738 79678 62845 67668 75266 97869

A: For younger adults: x x-x (x-x)2 9 3.53 12.4609 4 -1.47 2.1609 7 1.53 2.3409 3 -2.47…

Q: Find the variance(2 decimal).

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Q: How do I get the variance ?

A: The probability distribution is: x p(x) 1 0.05 2 0.1 3 0.12 4 0.3 5 0.3 6 0.11 7…

Q: * 2.4.5.6-8-17 11 17 20 24 32 Xị 3 5 9 3 fi 1. 4) 5n 00

A: As per our guidelines we are suppose to answer only one question1)Given data set is…

Q: 13. Jeremy called eight appliance stores and asked the price of a specific model of microwave oven.…

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Q: 4.14 Find the proportion X of individuals who can be expected to respond to a certain mail-order…

A: Given,f(x)=2(x+2)5    ;  0<x<10                ; elsewhere

Q: How do you find the mean and variance of part(d)?I need the detailed solution.

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Q: For the given data. Find 24, 26, 23, 25, 27

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