Fundamentals of Business Statistics The variable x takes only two values x, and x, with frequencies f and f,. If s be the S.D. of x, show that X1 – X2 f,f, fj + f,

Q: A study of a relation between "Price" and "Demand" had made for a sample of 6 Items: → 2 values are…

A: To check the existence of a linear relation we make a scatter plot between Price (X) and Demand (Y)…

Q: Correlation and Regression. This data contains attributes of a random sample of 25 apartment…

A: The information provided in the question are as follows : The estimated regression equation PRICE on…

Q: Q-2 Locate the mode by using histogram. 20 - 30 Marks 0-10 10- 20 30 - 40 40-50 No. of 12 20 16 12…

A: Locate the mode using Histogram

Q: Ocean currents are important in studies of climate change, as well as ecology studies of dispersal…

A: x y x2 y2 xy 76 14.2 5776 201.64 1079.2 79 19.6 6241 384.16…

Q: G. In general, how do calculations for variance and standard deviation for samples differ from those…

A: The general definition of variance is the ratio of the sum of the squared deviations from the mean…

Q: Car Weight (in Ibs) Car MPG NOTE: Before we start to do much computational/mathematical work, 3250…

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Q: US Death Rates Due to Heart Disease (t) years (R) Death Rate (Number of Deaths per 100,000) Years…

A: Given data: Years Death rate 1960 559 1970 493 1980 412 1990 322 2000 258

Q: Question 17 Given A = {-1, 0, 1, 2} and B = {3, 4, 5, 6}. Which of the following is a function from…

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Q: If two variables are positively linearly correlated, one of the variables tends to increase as the…

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Q: d. Q3 e. 4th decile f. 5th decile

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Q: From lecture, we learned that relationships between variables can be described through all of the…

A: Various parameters that describe relationships between variables are listed. Among them is a…

Q: Do the two variables have a linear relationship? O A. The data points do not have a linear…

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Q: (a) he pediatrician warts to use height to predict head Apediatrician warts to determine the…

A: Solution: let x= Head Circumference and y = Height  x y x2 y2 xy 17.3 27.5 299.29 756.25…

Q: a. I and IV b. II and III c. III and IV d. I, II, III, and IV I. II. III. IV. y = 3x - 6 y = x y =…

A: Given equations:- y=3x-6 y=23x y=-x y=x+1

Q: Draw and upload the schematic diagram of the following table. Use any platform (word, excel or take…

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Q: Which of these is NOT the same? * Range Dependent Value All are the same Domain Y-value

A: Answer

Q: An automobile tire manufacturer collected the data in the table relating tire pressure x (in pounds…

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Q: Which of the following is a continuous variable? O length of the car O car manufacturer O color of…

A: we have to identify which variable is continuous from given options.    discrete variable : possible…

Q: II. What relationship exists between the two variables? Finals Student Midterm (x) (y) f² y² xy 1 75…

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Q: variables

A: Given: X Y X-MX Y-MY (X-MX)2 (Y-MY)2 (X-MX)(Y-MY) 3 3 -2 -1 4 1 2 4 3 -1 -1 1 1 ___ 6 4 1…

Q: Mr. Ackerman likes to play basketball.  He scores 20 points in each game he plays.  His total points…

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Q: Below is data for two variables, X and Y.  Answer the questions that follow.  X Y X-MX Y-MY (X-MX)2…

A: Given values of X and Y are x y 3 3 4 3 6 4 7 6

Q: SCUBA divers have maximum dive times they cannot exceed when going to different depths. The data in…

A: Given data, X Y X*Y X*X 50 176 8800 2500 60 163 9780 3600 70 151 10570 4900 80 139 11120…

Q: The comparison of two variables is known as: ___________________________________.

A: The comparison of two variables is done by a hypothesis testFor example t-test compares the means of…

Q: Speed Dating  Some of the nonparametric methods in this chapter use ranks of data. Find the ranks…

A: The data shows that the attractiveness ratings of males by females who participated in a speed…

Q: Explain the following:   Dependent Variable Independent variable Moderating variable   You can…

A: Dependent variable refers to the variable that we test or measure in an experiment. The value of…

Q: A study of a relation between "Price" and "Demand" had made for a sample of 6 Items: → 2 values are…

A: The given data is Price (Xi) Demand(Yi) 70 18 75 23 80 10 85 16 90 17 95 15 We…

Q: A functi variable

A: (A) Given function is: u = 1 + 3z Here z is the independent variable and u is the dependent…

Q: fponts of the below hoicen are cll E -21 Point A. Point B, Point C b. Point C. Point E. Point F…

A: Consider

Q: How many of the following statements are correctly stated? • Qualitative variables describe how much…

A: How many of the following statements are correctly stated? Qualitative variables describe how much…

Q: elow is data for two variables, X and Y.  Answer the questions that follow.  X Y X-MX Y-MY (X-MX)2…

A: From the given information, X Y X-MX Y-MY (X-MX)2 (Y-MY)2 (X-MX)(Y-MY) 3 3 -2 -1 4 1 2 4 3…

Q: What is the dependent variable in the graph? HK- hoight (in feet) -7- 5- 4 N= time (n sec.) 9 o N.

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Q: relation is linear, detemine Wnetner it Indicates a positive or negative association between the…

A: The Negative and positive correlation are determined below as follows:   Positive correlation:…

Q: Retailers are always interested in determining why a etailer conducted a customer survey to…

A: The results shown in frequency histogram,

Q: Which of the following is an example of a continuous variable?

A: Here use basic of continuous variable and discrete variables

Q: earning at least Rs 63 but less than Rs 75. V Draw a less than ogive from the following data and…

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Q: Below is data for two variables, X and Y.  Answer the questions that follow.  X Y X-MX Y-MY (X-MX)2…

A: Solution: From the given information,

Q: Consider each of the following scatterplots, as made on the TI. This relationship is:

A: In this scatter plot, it is clear that both variables are in same direction. That is, both…

Q: The graph of the linear equation x = y passes through the point: O (0, –9.5) O (9.5,0) O (0,9.5) О…

A: For linear equation x=y passes through the point where x and y are same.