he following histogram represents the number of pages in each book within a collection. What is the frequency of books containing at least 250 but fewer than 400 pages? 2 100 150 200 250 300 350 400 450 Answer: What type of relationship is indicated in the scatterplot? 25 20 15 10 45 60 70 A. No relationship B. A negative linear relationship C. A positive linear relationship D. A positive curvilinear relationship Answer: -- Count
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- A data set is given below x 1 1 4 5 6 6 y 5.3 6.6 4.8 3.2 2.3 2.6 a) Comment on the type of relation that appears to exist between x and y. Choose the correct answer listed below. There appears to be __________________(a linear negative, a nonlinear, no, a constant, or a linear positive) relationship. b) Given that x = 3.8333, sx = 2.3166, y = 4.1333, sy = 1.7014, and r = -0.9421, determine the least-squares regression line. y = ______x + (___) Round to 3 decimal placesGiven the following pairs of value of the variables: Advertisement expenses and revenue generation (in million) of a hospital: (a) make a scatter diagram., (b) Do you think that there is any relationship between the variables? (c) Is it positive or negative? (d) is it high or low? and, (e) by graphic inspection draw an estimated lineA data set is given below x 1 1 4 5 6 6 y 5.3 6.6 4.8 3.2 2.3 2.6 a) There appears to be a linear negative relationship. b) Given that x = 3.8333, sx = 2.3166, y = 4.1333, sy = 1.7014, and r = -0.9421 y = -0.692x + (6.786) c) choose the correct graph below. (answer a, b, c, or d)
- Without doing any calculations, what type of a relationship exists between the pairs of observations? X Y 2 128 20 72 3 144 18 81 1 142A group of 11 students was selected at random and asked for their high school GPA and their freshmen GPA in college the subsequent year. The results were: Student High School GPA Freshmen GPA1 2.0 1.62 2.2 2.03 2.6 1.84 2.7 2.85 2.8 2.16 3.1 2.07 2.9 2.68 3.2 2.29 3.3 2.610 3.6 3.0I would like to know whether there is a linear relationship between the high school GPA and the college freshmen GPA, and we would like to be able to predict the freshmen GPA, if we know that the high school GPA…A professor at Ltts College is interested in the relationship between hours spent studying and total points earned in a course. Data collected on 10 students who took the course last quarter are given below. Student No. Hours Spent Studying Total Points Earned 1 25 18 2 10 13 3 70 53 4 40 43 5 85 68 6 45 28 7 70 68 8 60 58 9 35 23 10 55 43 1. Does the scatter plot suggest a linear relation between Hours (X) and Points (Y)? A.X and Y are related, but not linearly related. B.There is a strong linear relationship between X and Y. C. X and Y do not seem to be linearly related as seen from the scatter plot. D.There is a weak linear relationship between X and Y. 1a. By looking at the scatter plot, would you think X and Y are positively or negatively correlated? A. Positively B. Negatively
- A Hong Kong snack-food vendor offers 3 types of boxed ”lunches to go,” priced at $3, $5, and $10, respectively. The vendor would like to establish whether there is a relationship between the price of the boxed lunch and the number of sales achieved per hour. Consequently, over a 15-day period the vendor records the number of sales made for each of the 3 types of boxed lunches. The following data show the boxed-lunch price (x) and the number sold (y) during each of the 15 lunch hours.(3, 7) (5, 5) (10, 2) (3, 9) (5, 6) (10, 5) (3, 6) (5, 6)(10, 1) (3, 10) (5, 7) (10, 4) (3, 5) (5, 6) (10, 4)Prepare a scatter plot of the points and comment on the relationship between the price of the boxed lunches and the numbers sold each lunchtime.The average normal daily temperature (in degree Celsius) and the corresponding average monthly precipitation (in inches) for the month of August are shown here for seven randomly selected cities. Determine if the is a relationship between the two variables. Temperature 30 27 28 32 27 23 18 Precipitation 3.4 1.8 3.5 3.6 3.7 1.5 0.2Given the following set of five ordered pairs, the correlation r equals ______. a.0.3 b.0.6 c.0.9
- Given are five observations for two variables, x and y. xi 5 13 7 21 19 yi 59 42 55 10 29 -select your answer- choices: a. (A, B, C, D) the different graphs are being attached b. What does the scatter diagram developed in part (a) indicate about the relationship between the two variables? There appears to be a (positive, negative) linear relationship between x and y. c. Try to approximate the relationship between x and y by drawing a straight line through the data. (Many different straight lines can be drawn, Only one straight line can be drawn, A straight line cannot be drawn) to provide a linear approximation of the relationship between x and y. D & E questions are being attached. Thank you!A pediatrician wants to determine the relation that exists between a child's height, x, and head circumference, y. She randomly selects 11 children from her practice, measures their heights and head circumferences, and obtains the accompanying data. Height (inches), x Head Circumference (inches), y28 17.624.75 17.225.75 17.226 17.625 17.127.75 17.726.75 17.427 17.626.75 17.426.75 17.627.5 17.6 1. ŷ= ___x+ _____ 2. Compute the linear correlation coefficient between the height and head circumference of a child.…In the following data, the X scores reflect participants' rankings in a freshman class, and the Y scores reflect their rankings in a sophomore class. To what extent do these data form a linear relationship? Participant Fresh. X Soph. Y1 2 32 9 73 1 24 5 95 3 16 7 87 4 48 6 59 8 6