3, 5, 5, 4, 2, 2, 1, 1, 1, 4, 5, 3, 3 calculate variance

Q: The owner of a service station wants to determine if owners of new cars (two years old or less)…

A: Answers are   b.  There is not sufficient evidence to conclude that new car owners change their…

Q: One researcher collected a sample of expenses for advertisement from 5 companies as follows: 50, 60,…

A: The sample mean is, x¯=∑xn=50+60+55+58+725=2955=59 The sample mean is 59.

Q: The table shows a sample of the maximum capacity (maximum number of spectators) of sports stadiums.…

A:

Q: Describe how statistical techniques are applied in the various fields of business and economics…

A: Role of statistics in Business and economicsStatistics plays a very important role in both the…

Q: Over the last Ten months, the following numbers of absences have been reported: 39, 12, 8, 12, 1,…

A: Given problem Given that   Over the last Ten months, the following numbers of absences have been…

Q: Calculate the mean, median and standard deviation of these six numbers: 4, 2, 8, 3, 12, 9

A: Given,4, 2, 8, 3, 12, 9sample size(n)=6

Q: 1. The variance of the numbers 1, 2, 3, 4, 5, 6 equals 2.91667. A die is rolled 6 times. What is the…

A: Given: Variance of a roll of die = V[ X] = 2.91667 Number of rolls = 6 Let Y be the sum of 6 rolls.

Q: e added to reduce the error variance

A: Dependent Variable Independent variable wage experience The parabolic regression model will be…

Q: 22, 33, 44, 55, 23, 34, 45, 56, 20, 30, 40, 50 Test the hypothesis that the population variance are…

A:

Q: Calculate the mean,standard deviation and variance of these numbers. 8,7,3,2,5,2,4,1,6,4,2,1,3

A: Given the following data.     8, 7, 3, 2, 5, 2, 4, 1, 6, 4, 2, 1, 3 Find mean, standard deviation…

Q: The coefficient determination indicates: the scores of each case in a sample simultaneously on two…

A: We have to find corrcet answer.

Q: Compute the 1st quartile, 3rd decile and 20th percentile from the ffg. data: 3, 13, 11, 11, 5, 4, 2

A: Given : Data 3 13 11 11 5 4 2

Q: Define cohort study

A: Cohort study is powerful in conducting research on human populations.

Q: Calculate the means and standard deviations of:1, 2, 3, 4, 5

A: We have to calculate the mean and SD of given observations. The observations are  X : 1, 2, 3, 4, 5

Q: Calculate the 5 number summary of the given data. Using approximation method.…

A: Given that  We have to find five number summary of the following data…

Q: state two diaadvantage of displaying data in groups

A: We have to write two disadvantages ofndisplayimg data im group

Q: what is the z score formula and and reverse z score formula ?

A:

Q: Compute the test statistics.

A: Given that Sample size n = 36 Sample mean = 40 Sample SD = 12

Q: A sample of body fat percentages of 28 male bodybuilders was taken. The percentages (3.4%, 3.5%,…

A: Given Information: A sample of body fat percentages of 28 male bodybuilders was taken. The…

Q: AutoTrader.com would like to test if a difference exists in the age of three different types of…

A: From the given information, There are 3 groups and the total number of observations is 12. Let k=3…

Q: Identify the distribution of the standardized version of a normally distributed variable.

A: The distribution of the standardized version of a normally distributed variable have the mean 0 and…

Q: 10, 11, 12, 13, 13, 14, 14, 14, 15, 15, 16, 17, 18, 19, 19, 20. If a constant 5 is added to each…

A:

Q: 12. Normally distributed data are referred to as:

A:

Q: Assume that the population consists of only these eleven data points for y and z. Construct one…

A: It was stated to assume that the population consists of only these eleven data points for y and…

Q: In Pakistan, thousands of graduates got degrees from different universities every year. Most of them…

A: Given Data : City Jobless Rate (%) Crime Rate (%) Karachi 14 3 Lahore 21 4 Islamabad 16 2…

Q: 6, 37, 2, 9 , 48 ,18, 6, 1 ,10 ,3 how do you find the variance with these group of numbers?

A: The provided data set is, 6, 37, 2, 9, 48, 18, 6, 1, 10, 3 The mean of the data set can be obtained…

Q: What is Scatterplot?

A: Scatterplot: A scatterplot is a type of data display that shows the relationship between two…

Q: Compute the coefficient of variation for population mean = 20 and population variance = 2

A: The population mean is 20 and the population standard deviation is 2.

Q: How to find the variance, explain the formula

A: Mean:Mean is a measure of center in case of quantitative data. Mean of a data set is the sum of the…

Q: What is the sum of squares, variance and standard deviation of  8 ,1, 4, 3, 5, 3, 4

A: Given data x = { 8,1,4,3,5,3,4}x  =Σxn     = 8+1+4+3+5+3+47x =4

Q: uppose the graduate teaching assistant for Intro Stat at the University of Florida also collected…

A: Let us define the variables: Y: Percentage Grade. X: Average Study Hours Define the dummy variables…

Q: 50, 10, 10, 8, 6, 11, 6,11, 9, 9 What is the 1st and 3rd quartile?

A:

Q: Calculate the 5 numbers summary of the given data using approximation method.…

A:

Q: Two dice are rolled. [A die has six sides, each representing the score from 1 to 6] What is the…

A: The number of dice rolled is 2.

Q: A government agency computed the proportion of U.S. residents who lived in each of four geographic…

A: Claim : The proportions of people living in the various regions changed between the current year and…

Q: The dependent is variance inflation factor, make a decision whether it need to drop any variables.

A: Given information: The output of multiple linear regression model is given.

Q: The Commissioner of Health in New York State wanted to study malpractice litigation in New York. A…

A: A sample statistic is a piece of information you get from a fraction of a population. The statistic…

Q: How many independent variables are being tested in this study? 01

A: Given :  We have given that design matrix ,                               Level of anxiety…

Q: 17, 19, 21, 16, 20, 19, 17, 13 Mean Standard dev. Variance Median

A:

Q: analysis of variance

A: ANOVA: Analysis of variance is a statistical tool used in statistics to check the variability in the…

Q: How do I get the variance ?

A: The probability distribution is: x p(x) 1 0.05 2 0.1 3 0.12 4 0.3 5 0.3 6 0.11 7…

Q: WHAT IS VARIANCE

A: Solution Data given as 83, 85, 85, 85, 85, 85, 85, 85, 85, 85, 86, 86, 86, 86, 86, 86, 86, 87, 87,…

Q: How many students use RStudio only for data analysis? How many students use at least two software…

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Q: Provide one sample problem of Analysis of Variance (ANOVA)

A: ANOVA or the Analysis of Variance, is the process of comparing more than two samples and their…

Q: variance of [

A: Given,       6 ,7 ,10 ,11 ,12 ,13 ,16 ,18 ,25

Q: How to construct Scatterplot?

A: Scatter Plot: Scatter plot is the graphical representation of the relationship between two variables…

Q: A large retail company keeps sales data local to the individual branches where sales transactions…

A: Given that a large retail company keeps sales data local to the individual branches where sales…

Q: The owner of a service station wants to determine if owners of new cars (two years old or less)…

A: Correct answer is  b.  There is not sufficient evidence to conclude that new car owners change their…

Q: how do I find the variance?

A: Population variance is the measure of variability of the data that is how far away our data points…