onse, instead of including a variable which has no effect on the response? this question describe the effect of those decisions on the mean and variance of of the slopes.

Q: what you know about the "work status" variable, the best measure of central tendency is :  -the sum…

A: Given: Variable: Work status

Q: The profit for a production process is equal to $2,000 minus two times the number of units produced.…

A: Consider X is the number of units produced Here, Y = 2000-2X It is known that E(X) = 500, Var (X) =…

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

A:

Q: If the coefficient of variation of the data = 40 % , the variance = 100 , then the mean of these…

A: We have given that,  Variance (s^2) = 100 Standard deviation (s) = sqrt(variance)…

Q: What does a z-score tell you about a data value?

A: Solution: Let X be the random variable. The z-score is the standardized value of the given data.

Q: When data is normally distributed the mean equals the median True False

A: Normal distribution

Q: Why is the range much less informative (and much less useful) as a measure of variability than the…

A: Solution-: The problem with using the range as a measure of variability is that it is completely…

Q: When data is normally distributed the mean equals the mode. True

A: Normal distribution

Q: The measure of central tendency that is the data item in the middle of ranked, or ordered, data is…

A: The median is defined as the value such that half of the given values are smaller than or equal to…

Q: How the squared curvilinear correlation, η2, reflects the proportion of variance?

A: In analysis of variance, either for regression model or for design, if the proportion of variance is…

Q: If there is a large amount of variation, then on average, the data values will be far from the mean.…

A: The given statement is 'If there is a large amount of variation, then on average, the data values…

Q: Describe data in terms of variability, association, and relative standing.

A: Terms with example Variability Association Relative standing

Q: the variance of a data set is 144 and mean is 72 then coefficient of variance is

A: Given,variance(σ2)=144mean(x¯)=72

Q: Would you be able to help with Standard Deviation along with the range, mean, mode, and median?

A: Measures of variability:The measure of variability or the measures of dispersion can be measured…

Q: You can calculate an average/mean of qualitative data. True or False

A: mean , median and measure of spread  can't be calculated for qualitative data, because no natural…

Q: Why do you think that the mean is the most sensitive measure of central tendency?

A: We know that, mean is the ratio of sum of all observation and number of observation. Let, xi be the…

Q: Do you agree that the standard deviation can measure variable relationships? Explain

A: The term standard deviation was introduced by karl pearsons in 1893. It is one of the most commonly…

Q: Why is the median less affected by skewed data than the mean?

A: Mean: The average values of the total observations. Median: The value that divided data set into two…

Q: A local real estate magazine used the median instead of the mean when it reported the SAT score of…

A: It is given that the data were strongly skewed to the right.

Q: The number of books read buy student students in a week is an example of qualitative and discrete…

A: Qualitative variable consists of categories.

Q: true about the type of data?

A: A team of researchers was requested to collect data on the household expenditure of two groups…

Q: Should averages be taken literally? What are the drawbacks?

A: Average is a summary statistic that represents the center point or typical value of a dataset. It…

Q: How will a high outlier in a data set affect the mean and median?

A: There is the effect of an outlier on the median value.

Q: Business has been​ good! As a​ result, Benjamin has a total of​ $25,000 in bonus pay to distribute…

A: Given: The total bonus amount is $25000 After distribution each employee will get $2500

Q: A histogram of a set of data indicates that the distribution of the data is skewed right. Which…

A: Correct Option: C

Q: Briefly explain what is meant when a researcher reports “a significant mean difference between two…

A: Introduction: When a researcher wishes to test for the mean difference between two treatment…

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: In statistics, variance is the average squared distance of each data points from the population…

Q: Describe why a. data description using graphical methods sometimes is not sufficient b. measures of…

A: Here we have to describe,  a. Why the graphical methods sometimes is not sufficient? b. Why measures…

Q: You can assess normality of data using

A:

Q: Can you find a set of data such the mean, median, and variance are all equal to each other?

A: A normal distribution is a common probability distribution . It has a shape often referred to as a…

Q: The average number of newspapers for sale in an airport newsstand is 12, and the variance is 25. The…

A: We have given that  Average and variance for newspapers.  Average = 12 Variance = 25 Standard…

Q: What is the value of the variance if the mean of a frequency distribution is 100 and the coefficient…

A:

Q: Is the mean or median a better measure of center for this data set? Why?

A: Given information:…

Q: Explain what a box and whisker plot is and how we use it to understand central tendency and…

A: Box and whisker plot:A type of graph used to display patterns of quantitative data is called a…

Q: Do you agree that standard deviation can measure variable relationships?

A: Yes, Standard deviation can measure variable relationships.

Q: Mean is advantageous than the median because a. It is not influenced by extreme values

A: The mean is the average value of the data set and is computed by summing up all the observations and…

Q: (part 2) Give an example of a set of data for which the mean is lower than the median.

A:

Q: While performing searches on the Internet to find accommodation, Jasmine realized that the cost of a…

A: Given the data of number of Inhabitants and mean monthly rent of a 4 1/2 Room unit is shown below…

Q: what is the distribution of the coefficient of variation?

A: A coefficient of variance is used to determine the precision of an estimated value. It is primarily…

Q: The mean, median and mode are all equal, and the central tendency of data set is 8 for the data et…

A: Given information: It is given that the mean, median and mode of the data set is 8.

Q: the Measure of Central Tendency and Measure of Variability

A: Solution: measure of central tendency  : It give information about the central part of the…

Q: The histogram describes the height of students in a math class. Is the data univariate or bivariate?…

A: Solution. Given the histogram shows the height of students in a math class.

Q: The mode, mean, median are all highly affected by outliers? True or false?

A: The study is about mode, mean and median.

Q: The mode of a data set is 119, the median is 120, and the mean is 119. Are the data normally…

A: Normal distribution

Q: The double box-and-whisker plot compares the battery life (in hours) of two brands of cell phones.…

A: Here from given wisher and box plot for brand A and brand B Write 5 point summary from given two box…

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

A: We have to describe the negatively skewed  distribution and locate the position of mean relative…

Q: Cite three examples of two variables that are positively and three bivariate data that are…

A: