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: How to calculate the population standard deviation?

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Q: Describe what is meant by statistical significance.

A: Describe what is meant by statistical significance?

Q: How to calculate absolute value ? How to calculate standard deviation

A: An absolute measure of dispersion contains the same unit as the original data set. Absolute…

Q: The most commonly encountered measure of central tendency is the C. mode d. standard deviation a.…

A: Measure of Central tendency: Measure of central tendency is a single value it will lies within the…

Q: About what percent of a values from a normal distribution lie within one standard deviation (left…

A: Normal distributionWhat percent of values lie within one standard deviation of the mean ?

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: What does data mean in statistics definitions

A: Statistics:The science of collecting, analysing and making inference from data can be termed as…

Q: FOR ESTIMATION OF PARAMETERS IN STATISTICS: What are the Types of Estimates? How to estimate a Mean?

A: In Estimation of Parameter in statistics there are two types of estimation, i. Point Estimation  ii.…

Q: The rule that describes the percentage of data within 1, 2, and 3 standard deviation of the mean is…

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Q: Recently, a random sample of 25-34 year olds was asked, "How much do you currently have in savings,…

A: We need to find mean and standard deviation amount of savings for the given data.

Q: What is the mean reading? What is the standard deviation?

A: A function f(x) is said to be a probability density function if f(x) ≥ 0 and ∫f(x)dx = 1. Consider…

Q: Define descriptive statistics?

A: Under statistics, descriptive statistics and inferential statistics are two broad branches for…

Q: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the IQ…

A: Excel formula: =NORMINV(0.305,0,1)=-0.5100

Q: What if I'm told what the standard deviation is, can I find the variance? What units is standard…

A: Introduction  The questions is about standard deviations. Can we find the variance. And whate units…

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: sample standard deviation from a frequency distribution chart

A: Since , the frequency distribution is given. Our aim is to find the sample standard deviation. The…

Q: The following table gives the total caseload in the New York State courts from 2004 through 2009.…

A: YearsCases (in Millions)20044.220054.320064.620074.520084.720094.7

Q: Tossing Coins Find the mean, variance, and standard deviation for the number of heads when 19 coins…

A: Let X be the number of heads and n be the number of coins tossed.

Q: Discuss/explain the differences between mean and mean deviation. Give an example of each of them.

A: Mean and mean deviation are two important measures used in Statistics. Though, many people confuse…

Q: How closely does the mean of means match the population mean? How is the standard deviation of the…

A: Mean is the average of all the observations in the data set. It is a single value that represents…

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: The Alvin Secretarial Service procures temporary office personnel for major corporations. They have…

A:

Q: Describe about statistical error.

A: In statistics and inference theory, there are various methods through which estimates of true…

Q: A z-score tells us how many standard deviations a score is from the mean. What is another word for…

A: Measure of central tendency measures the central value of a dataset. Measured of dispersion measures…

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: 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: How do I determine standard deviation of an average score?

A: Solution: Let X be the score and n be the sample size. Standard deviation of scores should be known…

Q: Handwritten

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Q: what is the normal curve?  explanations and examples would help. I am very grateful.

A: A normal curve is a well- shaped curve that shows the probability distribution of continuous random…

Q: Part a) What is the probability that a Duxcell battery will last longer than an Infinitycell…

A: Given that lifetime of Duxcell batteries:  X(mu1=10,sigma1=2)lifetime of Infinitycell battery:…

Q: How to find standar deviation and an example

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

Q: Mean and standard deviation of a distribution are 16 and 2 respectively. At least what percent of…

A:

Q: how do you find standard deviation? how many bars should you have for a standard deviation? do you…

A: Introduction:The standard deviation of a set of observations is the square root of the average of…

Q: Explain why the mean is often not a good measure of central tendency for a skewed distribution.

A: Solution-: We find why is the mean often not a good measure of central tendency for a skewed…

Q: What is a normal distribution in statistics, and how is it used in data analysis? How can you…

A: A normal distribution is a probability distribution that is symmetric around its mean and…

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: The is NOT a measure of central tendency, and the is NOT a measure of variation. range median mean…

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Q: Describe the importance of standard deviation.

A: As per our guidelines, we are allowed to answer first  question only. Thanks   1. Describe the…

Q: hompop f 1 1,220 2 1,563 3 716 4 590 Total 4,089 응 29.8% 38.2% 17.5% 14.4% 99.9% c.f C.% 1,220 29.8%…

A: hompopf%c.fc.%1122029.8%122029.8%2156338.2%278368.0%371617.5%349985.5%459014.4%408999.9%4089

Q: At least 97.22​% of the data in any data set lie within how many standard deviations of the​ mean?…

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Q: What is the lowest standard deviation value ?

A: Standard deviation; The standard deviation indicates by how much each observation differs from a…

Q: Determine whether the following graph can represent a variable with a normal distribution. Explain…

A: Form the given graph it can be observed that the variable is normally distributed. The mean and…