The scale of the correlation coefficient is: a. nominal
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The scale of the
a. nominal
b. ordinal
c. ratio
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- 2. A.) Find the 5-number summary for the data. B.) Is the data discrete or continuous?Suppose the correlation coefficient r=0.16 Find:a. The coefficient of determination r2= (round to 3 decimal places)b. The percentage of explained variation = % (round to 1 decimal place)c. The percentage of unexplained variation = % (round to 1 decimal place)For numbers 13 to 15. Find the measures of position of the grouped data in Column A and B. Then compare using the statements below. COLUMNA COLUMN B Scores of Grade 10-Firetree Class in their Third Periodical Test Scores of Grade 10-Dao Class in their Third Periodical Test cumulative Lower scores frequency cumulative (1) Lower boundary (LB) scores frequency (ef) frequency (1) frequency boundary (Cf) (LB) 46-50 11 55 45.5 46-50 10 60 45.5 41-45 13 41-45 10 44 40.5 50 40.5 36-40 36-40 12 9 40 35.5 31 35.5 31-35 9 28 30.5 31-35 5 22 30.5 26-30 8 19 25.5 26-30 5 17 25.5 21-25 4 11 20.5 21-25 8 12 20.5 16-20 7 7 15.5 16-20 4 4 15.5 60 55 13. Which of the following statements is TRUE about the value of the Q3? A. Column A is higher than Column B B. Column A is lower than Column B C. Column A and Column B are equal D. None of the above 14. Which of the following statements is TRUE about the value of the D8? A. Column A is higher than Column B B. Column A is lower than Column B C. Column A and…
- Would appreciate the help.The type and measurement level of temperature data, respectively are O a. Discrete and ordinal O b.Continuous and interval O c. Continuous and nominal Od. Discrete and interval Oe. Disrete and ratioBrand A vitamins 505 506 502 S04 503 S01 S00 497 198 amount of Vitamin C in each pill was measured and plotted. From this dot plot, find the median, quartiles, and interquartile range: 494 196 495 40 samples of Vitamin C pills were 493 492 Milligrams of vitamin C taken from bottles of Brand A and the Quartile 1: Median: Quartile 3: Interquartile Range: 507 0odso 00od 000od 00od
- Please indicate whether the above scatter plot indicates an r value that is: a. close to r=-1 b. close to r=+1 с. clearly negative but not near r = -1 d. clearly positive but not near r = +1Two sets of data shown below represent male and female students' lengths in (cm) in a college. Determine the Coefficient of Variation of male and female students, and then select the correct choices: Set (1) Male Students 152 164 180 175 165 Set (2) Female Students 155 168 164 158 This question includes .multiple correct choices 179 C.V. female = 0.051 C.V. male > C.V. female C.V. female > C.V. male C.V. male = 0.085Q1. A study was conducted to investigate the relationship between premature birth and mental development at 12 months. The infant's birth weight was used as an index of prematurity. At age 12 months, the child's mental development was recorded. The results are shown below (the weights are in pounds): Birth 4 6 7 8 Weight(x) Developmental 85 Quotients(y) 88 87 94 96 Summary: n = 5, £x=30, £x² = 190, Ey= 450, Ey² = 40590, Exy = 2728 . a. Find the least square prediction equation, y on x. b. Obtain a 95% confidence interval for the average value of y when x 6.5 (i.e., a C.I. for E(y|x= 6.5)). c. Obtain the coefficient of correlation (r) and interpret the result. d. Test the hypothesis that H, :p= 0 vs. H, : p0. Use a =0.05.
- The horsepower (Y, in bhp) of a motor car engine was measured at a chosen set of values of running speed (X, in rpm). The data are given below (the first row is the running speed in rpm and the second row is the horsepower in bhp): rpm 1100 1400 1700 2300 2700 3200 3500 4000 4600 5200 5600 6100 Horsepower (bhp) 50.2 64.29 67.83 98.56 131.09 163.65 161.55 198.62 226.03 254.71 283.63 299.81 The mean and sum of squares of the rpm are 3450.0000 rpm and 173900000.0000 rpm 22 respectively; the mean of the horsepower values is 166.6642 bhp and the sum of the products of the two variables is 8506152.0000 rpm bhp. Given Values: a) Slope: 0.052 b) Intercept: -11.694 c) 95% Confidence Interval when the standard error of the estimate of the slope coefficient was found to be 0.001160: (0.0494, 0.0546) please answer the following: Part e)Without extending beyond the existing range of speed values or changing the number of observations, we would expect that increasing the variance of the…B. Consider the data below; this is taken from our examples above: Class Interval Frequency (f) (Scores) 0- 2 3 - 5 6 - 8 10 9 - 11 13 12 - 14 17 15 - 17 18 - 20 8 Total f = 60 %3D Determine the following and write a brief interpretation of the results: - Cfp C fa 1. Q1 = LB + 4 %3D 3n 2. Q3 = LB + Cfp C 4 fq 2n Cfp |10 C fd 3. D2 = LB + 25n 4. P25 = LB+ Cfp C 100 fp C. The following data are scores obtained in an aptitude test of 20 applicants (grouped into two) for a clerical position in a certain company. Group 1. 8, 24, 11, 24, 22, 15, 23, 12, 9, 14 Group 2. 21, 34, 23, 25, 27, 20, 29, 30, 30, 28 Do the following: a. Determine the variance, mean deviation, and standard deviation. 2.Coefficient of variation is measure of dispersion. Select one: a. absolute b. relative C. Both of these d. none of these