What is the mean, standard deviation and variance of the time the subjects stayed balanced?

Q: what is the sample standard deviation?

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Q: What is the variance and standard deviation of 2, 4, 5, and 6?

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Q: Where are most of the data gathered in a negatively skewed distribution? Which value is larger, the…

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Q: Using the same data from the previous question, what are the range, sum of squares, sample variance,…

A: Range is the difference between Maximum and Minimum value.

Q: Based on the boxplot and descriptive statistics, which group shows more variability in narcissism…

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Q: compute for the mean, variance and standard deviation.

A: Here given, Three paper bills are drawn in succession without replacement from a piggy bank. Piggy…

Q: What is an everyday example of variance within samples?

A: If we need to know the variance within samples, we need to use ANOVA Test.

Q: What is the mean of Class A and B? What are the standard deviation and variance of Class A and B?…

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Q: What is the standard deviation of these sample data?Y -2 1 3 2 -1 0 4 6

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Q: If a data set has 25 values and a standard deviation 7.4, what is the variance?

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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: 3. What are the symbols used to represent the population variance and standard deviation?

A: It is an important fact in statistics . It has got wide applications in all statistical procedures .

Q: Compute the mean, median, Variance, and the standard deviation for the data below: 3,2 ,3, 4, 3…

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Q: What is the standard deviation of the data set 14,23,9,12,21,18,8

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Q: Explain the formula for the variance of the sampling distribution of the mean?

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: Which kind of descriptive statistics can be included to summarize the quantitative data? if the…

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Q: Illustrate the mean or expected value, variance and standard deviation

A: given: x f xf (x- x )2 f*(x- x )2 4 1 4 25 25 5 2 10 16 32 8 2 16 1 2 10 2 20 1 2 13 2…

Q: What is the relationship between the standard deviation of the population and the standard deviation…

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Q: 3. Given the sample variance of a distribution, explain how to find the standard deviation.

A: Variance is the measure of dispersion that calculates the average of the squared difference from the…

Q: What happens to the mean and the standard deviation as sample size increases? Why?

A: It depends on the actual data added to the sample, but generally, the sample standard deviation will…

Q: Find the standard deviation. Round to one more place than the data. 6, 20, 18, 9, 15, 20, 18, 20, 8

A: We first find the mean by adding all the values and then dividing by the total number of elements.…

Q: Explain Standard Deviation and Variance?

A: Variance and standard deviation: Variance is the average of squared difference of sample points from…

Q: What is the mean, variance and Standard Deviation?

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Q: What is the difference between what the z score measures and what the standard deviation measure?

A: z score is standard score and the formula for finding z score is,

Q: If a data set has values and a standard deviation 7.4, what is the variance?

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Q: 1. The standard deviation provides an overall measurement of how much participants' scores differ…

A: Given data: The standard deviation provides an overall measurement of how much participants' scores…

Q: If a data set has 25 values and a standard deviation of 7.4, then the variance is?

A: Given: Standard deviation = 7.4

Q: In the case of research data analysis which one is the best? SD (standard deviation)  or ANOVA?

A: Statistical methods involve  planning, designing, collection of data, analyzing the data,…

Q: What is the equation for The standard deviation of the distribution of sample proportions

A: Let p be the population proportion of successes.

Q: What is the difference between a normal and binomial distribution?

A: Statistics uses normal distributions more often than binomial distributions most of the time.…

Q: which one is more precise sample variance or population variance

A: We want to tell you which one is more precise.

Q: Does the sample size have an effect on the standard deviation of all possible sample means? Explain…

A: Points on sampling distribution of the sample mean: If the true population distribution of a random…

Q: A bookstore found out that 23 percent of their customers buy a book, 34 percent of their customers…

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

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Q: Which average - mean, median, or mode - is associated with the standard deviation?

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Q: what is the correct test statistic table to use when you are comparing the mean weight of a sample…

A: Since the population standard deviation is unknown, so to compare the mean weight of sample…

Q: What is the range of the distribution? What is the value of the variance of the data set? What is…

A: We have to calculate the range, variance and SD of given dataset. Range = Maximum - minimum And SD…

Q: What is the relationship between the mean of a population and the mean of its sampling distribution?

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Q: What us the variance of a distribution having a standard deviation of 5.26?

A: Given, standard deviation=5.26 find variance=?

Q: What is the best point estimate for the population's variance if the sample variance is 41?

A: Given,sample variance(s2)=41

Q: What is the sample standard deviation?

A: To Discuss: What is the sample standard deviation?

Q: Do researchers prefer to report the variance instead of the standard deviation because it is easier…

A: No, researchers prefer using standard deviation because standard deviation is in the same units as…

Q: The Variance for a set of scores is 36, what is the standard deviation, what is the range?

A: Given, variance = 36Therefore,  Standard deviation = square root of variance…

Q: How to Convert raw scores to deviation scores?

A: Standard normal distribution: Standard normal distribution is the normal distribution with mean as 0…

Q: Find the Mean, Median and Standard Deviation for the data. Round to two decimal places.…

A: The following data has been given: 10,7,9,3,8,15,5,5,12

Q: Can the measure of central tendency tell  a researcher how spread out the scores are in a…

A: Introduction:A measure of central tendency helps to identify the location of a dataset, whereas a…

Q: What is the mean difference between the samples?

A: Test is that whether the mean number of mass transit trips is equal for both neighborhoods. Note :…

Q: Explain the difference between variance and standard deviation? how it is calculated?

A: Variance Standard Deviation It is average of squared deviations It is root mean squared deviation.…

Q: If the mean time to respond to a stimulus is much higher than the median time to respond, what can…

A: There can be three different shape of the distribution: 1) Positively skewed: Most of the values…

Q: What is the relationship between the standard deviation and variance?

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Inverse Normal Distribution

The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.

Mean, Median, Mode

It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.

Z-Scores

A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.