Critically discuss standard deviation as a measure of risk. In your discussion, include possible advantages and disadvantages of standard deviation as a measure of risk.

Q: Describe about the mean absolute deviation.

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Q: Define variability and explain why it is an important concept in statistics. What are the three…

A: Variability is a measure of spread or dispersion. In a way it tell us the spread of each data point…

Q: there are 300,000 people review  for the movie  pupulation mean is 7.2 stars and standard deviation…

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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: How do we calculate standard deviation?

A: Standard Deviation A number that expresses how much the members of a group deviate from the group's…

Q: If you chose to compute a mean for a variable, which measure of variability would you most likely…

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Q: Suppose you want to conduct a survey to determine the proportion of people who favor a proposed tax…

A: Answer:- Let, The proportion of people who favor a proposed tax policy = p and sample size = n .…

Q: What is a frequency distribution? Explain how these differ if we are using qualitative data versus…

A: Frequency distribution- Frequency distributions are visual displays that organise and present…

Q: If the main effect of age is significant, describe the main effect of age. Include the overall means…

A: Main effect in the Analysis of Variance test is the effect of one the independent variable on…

Q: How does the curve change when the standard deviation is the same and the mean changes?

A: The mean is the center of symmetry of a curve or normal density curve.

Q: What is the standard deviation of the average fill volume of 100 cans?

A: We have given that the fill volume of cans are independent, normal random variables. The standard…

Q: About what percent of X values lie between the first and second standard deviations from the mean…

A: According to the empirical rule of normal distribution, within one standard deviation of the mean,…

Q: IQ is normally distributed with a mean of 100 and a standard deviation of 15. What IQ do you need to…

A: IQ is normally distributed with a mean of 100 and a standard deviation of 15.

Q: Which one measure of variation should you report for the variable AGE (people write their actual age…

A: The measures of variation are descriptive statistics that determine the spread of the data.

Q: How to find standar deviation and an example

A: The formula for standard deviation can be defined as:

Q: What method would you use to approximate the percent of women who lie within 2 standard deviations…

A: Given that,   Number of movies(x) frequency(f) f*x 20 25 500 21 10 210…

Q: What are the best ways to find the standard deviation?

A: Standard deviation is a measure of variability. It describes how far the data falls from the…

Q: The highway mileages of 147 cars are in a file named CARS2.+ These cars are 2003 models. Find the…

A: Mean Formula The mean formula is defined as the sum of the observations divided by the total number…

Q: Differentiate between qualitative and quantitative data with examples. What are the limitations of…

A: Qualitative research is aimed at gaining a deep understanding of a specific organization or event,…

Q: A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what…

A: Given that mean=15 and standard deviation = 2 Let, X= number of hours spent by a student in the…

Q: Americans love ice cream .The annual per capita consumption of ice cream ,in pounds ,in the united…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 16.5 and…

Q: Explain Mean of the Squared Deviations?

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Q: How to determine to cut ap value in statistics?

A: P-value: The p-value is a measure of degree of the evidence against the null hypothesis. The…

Q: tter measurement of the spread of data than simply taking the sum of the deviations of each x value…

A: Spread of the data means how far the values are there from the mean.

Q: 9. mean = 676; standard deviation = 60 Page

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Q: Explain why we need to square the deviations from the mean in our calculation of the standard…

A: 3) The deviation formula is, Deviation=Xi-Mean In the formula Xi is individual scores.

Q: Describe the descriptive statistics between the two variables.

A: For  College GPA:-Mean=2.7307standard deviation =0.4296Minimum = 2.0800First quartile (Q1) =…

Q: need range and standard deviation

A: The given data is, The ascending order of the data is, The no.of observations is, n = 40 The…

Q: What is the standard error of the mean?

A: Standard error: Standard error is a measure which explains how accurate are the sample means to…

Q: Determine the range, mean, and standard deviation of the data set. {9,5,9,17,17,16,3,8}

A: Given n=8 9,5,9,17,17,16,3,8

Q: Explain Why can’t the value of the standard deviation ever be negative?

A: Standard deviation is basically the square root of the variance and variance quantifies the amount…