What is the standard deviation (spread from mean) of the dot plot?

Q: Explain how the F-test statistics is calculated and what it tells us about the variance between and…

A: In ANOVA, “SS” stands for “sum of squares”, “df” stands for degrees of freedom, F is for the test…

Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

A:

Q: The weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…

A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…

Q: What percentage of the data will fall between 1 standard deviation below the mean and 2 standard…

A: P(-1<z<2)=?

Q: Write down the important properties of the Normal Curve.

A: A normal curve is identified using the values of the mean and standard deviation to show the…

Q: What do the mean deviation, variance and standard deviation all have in common? How is this common…

A: Mean deviation, standard deviation and variance all measure the spread of the distribution.Mean…

Q: Explain the key features of a normal distribution

A: Normal Distribution :  The normal distribution is also called as Gaussian distribution. It is made…

Q: Explain why it is true that the slope of a line is related to the Pearson correlation statistic, r

A: The slope is essentially defined as the measured rate of change in the dependent variable, as the…

Q: Explain the percentage slabs under the Standard Deviation Rule?

A: The percentage of slabs under the standard deviation rule or empirical rule is discussed as follows:

Q: What are the Properties of the Normal Curve?

A: A normal curve is identified using the values of the mean and standard deviation to show the…

Q: The average hardware repair time is 200 minutes and the standard deviation is 50 minutes, while the…

A: Solution

Q: Describe about the Properties of the Normal Curve?

A: A normal curve is identified using the values of the mean and standard deviation to show the…

Q: Explain how standard deviation is calculated and how does it play an important role to determining…

A:

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: Describe about the Error Variability?

A: The element of variability is produced by factors, such as measurement imprecision, and is not…

Q: does the range and standard deviation remain unchanged because the addition of 7 is a constant so…

A: given data  mean = 74 median = 76.5 range = 65 standard deviation = 11 add 7 points to each score…

Q: Describe about mean square between.

A: In ANOVA, “SS” stands for “sum of squares”, “df” stands for degrees of freedom, F is for the test…

Q: Explain an important difference between the standard deviation and the mean.

A:

Q: hat is one reason the Average Absolute Deviation isn’t more commonly used?

A: Explain one reason for the avr. absolute dev. is not commonly used.

Q: The standard error of the mean serves as a special type of standard deviation. Describe about it.

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

Q: The scores on a standardized test are normally distributed with a mean of 90 and standard deviation…

A: The test score is 0.6 standard deviations above the mean is obtained below: From the given…

Q: I don't understand how to use the given information to answer the questions about the mean and…

A: Given probability distribution…

Q: Explain Mean of the Squared Deviations?

A: