find the variance for the given data 7 7 2 5 1

Q: The question is which box plot has the greatest variability and which box plot has the least…

A: Basics of a boxplot:A boxplot is based on the 5-number summary: (Minimum, Q1, Median, Q3, Maximum);…

Q: 2. (6:2,4) Consider the following population data set: X f 16 - 22 20 23 – 29 28 30 – 36 26 37 - 43…

A:

Q: A population of grades for a statistics class of six students is given below:   80 74 65 84 85 70…

A: From the provided information, The population data is as follow: 80, 74, 65, 84, 85, 70

Q: Select all answer that are correct. What is the mode of the following data? 2    2    2    3    3…

A: The mode of a data is given by the number or data value that occurs most frequently. In the given…

Q: The following data set represents the ages of all 6 of Nancy's grandchildren. 11, 8, 5, 6, 3, 9 Find…

A: The number of observations, n=6. The mean is calculated below.

Q: Find the variance of the data

A: a) given data : -3,-2,-1,0,1,2,3,4

Q: La Suppose the midterm grades for 10 students are the following: 70, 65, 75, 80, 63, 90, 71, 75, 93,…

A: Hi there! Thanks for posting the question. Since there are multiple subparts in each question we…

Q: Make a scatter diagram for the data. Use the scatter diagram to describe how, if at all, the…

A: The data is given on x and y.Given that,Sample size

Q: I asked a sample of SCOB instructors how many football games they watched a particular weekend and…

A: From the provided information, The data values are as follow: 0, 3, 4, 1 Sample size (n) = 4

Q: How much should a healthy Shetland pony weigh? Let x be the age of the pony (in months), and let y…

A: Procedure to draw scatterplot using Excel: Enter the data in an Excel sheet. Select the data and…

Q: Calculate the standard deviation of the following set of numbers. Use the formula for the standard…

A: Standard deviation is a measure of dispersion, it describes who well the data is spread. Standard…

Q: What percentage of the data is located in the red sections? -30 -20 20 30 0,0 0,1 0,2 0,3 0,4

A: In a normal distribution 99.7% of the data lies within 3 standard deviations around the mean value.…

Q: Calculate the variance using the definitional formula. (Set up a table) X= 6  (M=6) Scores: 3 4 5 6…

A: The variance formula is, Variance=∑iX-M2n-1 The value of ∑iX-M2 is, Scores X-M X-M2 3 -3 9 4…

Q: Find the variance for the given sample data. 18, 18, 18, 9, 15, 5, 10, 5, 15,10,15

A: The sample mean is, x¯=∑iXn=18+18+18+9+15+5+10+5+15+10+1511=13811=12.5455 The sample mean is…

Q: A population of grades for a statistics class of six students is given below: 90 65 70 85 86 70 Find…

A: given data : 90,65,70,85,86,70

Q: In the data set below, what is the variance? 3 7 2 8 5 9 1 If the answer is a decimal, round it to…

A: Given data (3,7,2,8,8,9,1) n=7

Q: Determine the approximate population variance. # of People Helped 247 211 200 199 180 230 215 175…

A: Given Data :

Q: The following is the list of the number of hours that 30 people watch TV per week: 3 7 2 16 7 11 34…

A: The given data is: 3,13,10,7,20,4,2,4,26,16,3,13,7,41,6,11,27,23,34,6,4,40,19,29,9,37,30,22,0,5

Q: The high temperature, in ∘C, on the first day of winter was recorded in a certain city every year…

A: Given data is,4,12,6,9,6,11sample size(n)=6

Q: A food bank investigates if the number of times their donors walk by a homeless person each week…

A: The following information has been provided: Donor ZX ZY 1 -1.3 0.36 2 0.64…

Q: How do you find D? Asking about the end behavior of the data?

A: To find the model that exhibits the end behavior of the data, we need to look at the possible end…

Q: 5. A set of 10 scores has SS = 90. If the scores are a sample, the sample variance is and if the…

A:

Q: Distance traveled (in kilometers per day)  of 5 selected sales persons; 100, 112, 118, 120, 120.…

A:

Q: A city wants to know if a new advertising campaign to make citizens aware of the dangers of driving…

A: If the before and after on any information compared their mean significancy using the t test for…

Q: The battery life of the new iPad Mini introduced Apple is uniformly distributed between 8.5 and 12…

A: Formula is:

Q: Using the provided data and R, do a test to determine whether the average number of residents in the…

A: Given: 2845, 2054, 3988, 2662, 3276, 3676, 4386, 3959, 8161, 4579, 2594, 3060, 4656, 4585, 2449,…

Q: For effect sizes, which one does not measure the proportion of variance accounted for (i.e.…

A: The objective is to identify the option, which does not measure the proportion of explained…

Q: Consider the five-product line produce products with the same weight (grams). Test the hypothesis of…

A: If there is homogeneity of variance then we use the Bartlett test. Here we check whether the…

Q: The average scores of the students in a Statistics test is 14.5 and the variance is 36. Find the…

A: Given: The mean scores of students in Statistics is given as:…

Q: Given the sample data 6 10 12 12 11 17 9. Use the definition of sample variance to find the…

A:

Q: The data below shows the overall miles per gallon (mpg) of 2021 small SUVs. What is the variance?…

A: Given data is24,23,22,21,22,22,18,18,26,26,26,19,19,19,21,21,21,21,21,18,19,21,22,22,16,16

Q: Suppose an engineer wanted to determine whether the gas mixture used increases gas mileage. He…

A: Given Information:   Mix1 Mix2 Mix3 Car 1 27.8 27.9 28.5 Car 2 26.6 26.7 27.1 Car 3 26.3…

Q: 2b What happens to the variance of a set of scores if (a) A constant a is added to each score in the…

A: (a) Variance measures how far the data values are from the mean. One of the property of the variance…

Q: A sample of 8 random families' overall monthly water usage bill (in taka) is as follows: 187 310 280…

A: The data shows the overall monthly water usage bill of 8 random families.

Q: The following data values represent a sample. What is the variance of the sample? x = 9. Use the…

A:

Q: alculate the variance of 13, 25, and 16, using the sum of squares formula (also known as the…

A: We have given that data  13 ,25,16  I want to find variance  Variance = (∑x2 - (∑x)2/n)/(n-1)

Q: Consider the following frequency table. Frequency 8 4 15 7 21 10 28 11 3 Write down the mode. 2.

A: Using the formula of variance.

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.