What is the deviation?
Q: The standard deviation of (1,9,8,4) is approximately what?
A:
Q: You calculate that the standard deviation of a set of observation is 0. This tells you that.....?
A: The standard deviation measures the deviation of data points from mean. Its formula involves the sum…
Q: A score that is 9 points above the mean corresponds to a z score of +1. What is the population…
A: As given: A score is 9 points above the mean. It corresponds to a z score of +1. It is required…
Q: c. What is the mean of the sample means? d. What is the standard deviation of the sample means…
A: Let Mu = population mean X bar = sample mean n = sample size Sigma = population standard…
Q: 3. The average age of the marketing executives in an ad agency is 26, with a standard deviation of…
A: Note : Since you have asked multiple questions, we will solve the first question for you. If you…
Q: how do you find the standard deviation of 7.1 , 11.6, 8.1, and 13.4 ?
A: The standard deviation of a data distribution tell us how deviated are the data points with respect…
Q: a) Does this affect the average? If so, by how much? b) Does this affect the median? If so, by how…
A: An investigator has a computer file showing family incomes for 100 subjects in a certain study.…
Q: standard deviation?
A: From the given data, the minimum and maximum values are, 20.5 and 110.7 The range is, The mean is,
Q: 3. In regard to the standard deviation you calculated on #2, what is one conclusion you can make…
A: You have asked only question 3. So, the answer is given for question 3 below in the next step.
Q: 1. The scores on a test have a mean of 100 and a standard deviation of 15. If a personnel manager…
A: Formula : Z =(X - μ)/σ
Q: Assume that the mathematics scores on the SAT are normally distributed with a mean of 500 and a…
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Q: Could the graph represent a variable with normal distribution? If so, what is the mean and what is…
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Q: What is the 80th percentile if the mean is 3 and the standard deviation is 0.6
A: It is given that µ= 3, σ= 0.6.
Q: If there is a small amount of variation, then the standard deviation is what
A: Standard deviation: It is defined as the positive square root of the variance. It fulfils requisites…
Q: The standard deviation may not be greater than the mean. O True O False
A: False: standard deviations may be greater than mean example: random variable x follow standard…
Q: What is the standard deviation of the data?
A: We want to calculate standard deviation
Q: 9. A sample of 25 observations has a standard deviation of 5. The sum of the squared deviations for…
A: To find: The sum of the squared deviations for all observations from the sample mean.
Q: 5.according to the empirical rule how much of the data lies within two standard deviations of the…
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Q: In a medical study, a researcher wishes to select respondents in the middle of 45% of the population…
A: Given, In a medical study, a researcher wishes to select respondents in the middle of 45% of the…
Q: What does Chebyshev’s rule say about the percentage of observations in any data set that lie within…
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Q: What is another name for the standard deviation of the variable x? What is the reason for that name?
A:
Q: If the mean is seven and the standard deviation is two, what value is three standard deviations to…
A: It is given that the The mean is 7 and the standard deviation is 2 i.e. μ =7 and σ =2. We have to…
Q: 4. Which of the following distributions has the larger mean? Which has the larger standard…
A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…
Q: What is the Mean deviation of the numbers 0.5, 0.8, 1.1, 0.9 and 0.6
A: The data is given by 0.5, 0.8, 1.1, 0.9, 0.6 And the mean of these numbers is Mean = (0.5 + 0.8 +…
Q: 2. How is the sample size related to the deviation?
A: We have to define how sample size is related standard deviation
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: How does one calculate the standard deviation?
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Q: 16. In a standardized test with a normal distribution of scores, the mean is 63 and the standard…
A: here use normal curve property and value near to center in curve have more chance to occur
Q: A teacher finds that the test scores of a group of 40 students have a mean of 72 and standard…
A: (a) A teacher finds that the test scores of a group of 40 students have a mean of 72 and standard…
Q: Suppose you wish to invest money safely and are trying to decide between stock options in two…
A: Here We have to invest money any one of two companies . The average rates of rerurn are the same for…
Q: What is the deviation?
A: Deviation is Difference between the Given observed value and One fixed Value...
Q: Q3 :- :- if you know the standard deviation = 3 for measured data, what is the variance ?
A: Given in question Standard deviation = 3
Q: 19. If the mean is 19 and a standard deviation is 3.7 for a normally distributed variable, what is…
A: Here we need to find the z score corresponding to 14.9.
Q: What are the means and standard deviation of the list below.
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Q: 4. Find the mean absolute deviation for: Cost of books in dollars: 4, 15, 8, 4, 6, 11, 1, 7, 3, 1
A:
Q: Explain the empirical rule in your own words. How many standard deviations would it take for you to…
A: Empirical rule:About 68% of data lies within the first standard deviation of the mean.
Q: Professor Ivy’s students have a Mean grade of 69.5 and a Standard Deviation of 6.5. If Johnny has…
A: From the provided information, Mean (µ) = 69.5 Standard deviation (σ) = 6.5 Let X be a random…
Q: If a number is added to a data set which is far away from the arithmetic mean the what happens to…
A: There are two properties regarding the addition of a number to a data set and its effect on standard…
Q: 4. Show that mean deviation about mean is
A:
Q: Explain the standard deviation?
A: Standard deviation: Both the standard deviation and the variance are based on how much each…
Q: (O) What is the standard deviation of a distribution that has a mean of 46.2 if a PERFORMANCE value…
A: From the provided information, Mean (µ) = 46.2 Performance value (x) = 28 Z score = -1.24
Q: what is the Mean Absolute Deviation? What is it's purpose?
A: Deviation in statistical term defined as a single (or) more number of data values deviated from the…
Q: Assume that the test scores from a college admissions test are normally distributed, with amean of…
A: Hence,the percentage of the people taking the test score between 400 and 500 is…
Q: 2. What is the difference between the standard deviation and the coefficient of variation? When is…
A: Standard deviation: Stan. deviation shows how far the observations are form the mean of the data.…
Q: what is the mean absolute deviation? 6, 5, 7, 2, 4, 8
A: We will find the mean absolute deviation as following.
Q: The variance of a sample of 100 observations 81. the standard deviation of the sample equals?
A:
Q: What conclusion can you make base on the standard deviation?
A: Answer:
Q: 4. The variance of a data set is 3410.56. Find the standard deviation for the data set.
A:
Q: In simple terms that a normal person can understand. What is population deviation and sample…
A: Difference between the population deviation and sample deviation.
Q: What happens to the standard deviation if the differences between the mean and data values are…
A: The standard deviation, which is described through a mathematical quantity to measure the amount of…
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