if your data is not normally distributed, to describe dispersion you should use: O standard deviations O standard deviations based on a median O quartiles modes

Q: widgels. process is working properly, it turns out that tne widgets are normally distri with a mean…

A: Given : n=25 , X-bar=2.46  , s=0.16 , μ0=2.6 , α=0.05 Since , the population standard deviation (σ)…

Q: The accompanying data represent the monthly rate of retum of a certain company's cornmon stock for…

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Q: DATAfile: TobaccoFires You may need to use the appropriate appendix table or technology to answer…

A: Confidence interval is the range or interval likely to contain the population true parameter. It has…

Q: Which type of data would best represent a numeric unemployment value? nominal O interval ordinal

A: The level of measurement is describes the classification of the nature of information of the values…

Q: A professor surveys the students in her class as to how many hours per week they spend studying for…

A: Given data1, 1.5, 1.5, 2, 2, 3, 3.5, 4, 4, 4.5, 5, 5, 9, 11, 12Which measure of central tendency is…

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: Which measure of central tendency can be applied to nominal data? mean range mode O median

A: Mean- brain of data Range- difference of maximum and minimum. Mode- most frequent in data. Median-…

Q: Determine what percentage of your data is within 2 standard deviations of the mean. (Show your…

A: To find what percentage of the data is within 2 Standard deviations of the mean, Chebyshev's…

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: Identify characteristics of the distribution represented by the following Quantile-Quantile (Q-Q)…

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Q: The side-by-side dotplot below displays the arm spans, in centimeters, for two classes. Which…

A: Stem and leaf is the graphical representation of the data. Here we divide the data into two parts…

Q: Which measure would you use to explore the dispersion of your data? Choose all. variance mean mode…

A: We have given that,  Which measure would you use to explore the dispersion of your data?

Q: The number of awards earned by students at one high school is recorded. Predictors of the number of…

A: Given information: The variables in the given study are: Student ID Math scores Total # of awards…

Q: For the data set (−1,−2),(2,2),(5,5),(7,7),(12,11) find interval estimates (at a 80% significance…

A: Regression equation can be find by using excel:    (I) Enter the data in excel under the column of x…

Q: Please explain all of the steps involved in solving this problem.  What is the 60th percentile of…

A: Given, Number of Days on Campus Frequency Relative Frequency Cumulative Relative Frequency…

Q: Population (N) Standard Deviation Mean Median Mode Managers (21) 60.52 70 9.28 Employees (29) 52.79…

A: We have given that the mean, median, mode and standard deviation of employees and managers in the…

Q: Which of the following is not a measure of dispersion in a set of data? O standard deviation O…

A: Remark:  A measure of dispersion for a data set helps us to know about the spread of the data set.

Q: Ethnic Identity of Korean Americans STATISTICAL GUIDE T-tests produce a t-statistic. A t-statistic…

A: Gender t Age t     Male Female 13-15 16-18 Total Mean Std. Dev Mean Std. Dev Mean Std. Dev…

Q: A particular fruit's weights are normally distributed, with a mean of 269 grams and a standard…

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Q: Which measure(s) of central tendency is appropriate for a ratio variable? The median and mean are…

A: Solution-: Which measure(s) of central tendency is appropriate for a ratio variable?  The median…

Q: When extreme values are present in a set of data, which pair of the following descriptive summary…

A: Extreme values are values that are significantly different from the other values in a data set.

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: Heights for group of people normally distributed with mean = 65 inches and standard deviation = 2.8…

A: Solution: Let X be the height. From the given information, X follows normal distribution with mean…

Q: Which of the following is a biased​ estimator? That​ is, which of the following does not target the…

A: If a sample represents the population from which it is taken, then, the population parameters are…

Q: If data come from a normal distribution, which of the following quantifies the relationship between…

A: Solution-:If data comes from a normal distribution, which of the following quantifies the…

Q: When constructing a research design and the researcher has gender as a variable, please answer the…

A: Gender Is qualitative or categorical variable, that can be divided into two categories.

Q: What are the steps for calculating variance? Steps for standard deviation? Please calculate the…

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Q: Which of the following is the best measure of central tendency for age? Mode:55 Median:44.5…

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Q: For the data set (−2,−3),(1,1),(5,6),(9,6),(12,11), find interval estimates (at a 92.2%…

A: The following solution is provided below

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.