For the data below, what is the value of Pearson’s
r?
X Y
5 4
6 3
8 6
9 6
4 4
s x = 2.07 s y = 1.34
.21
.37
.63
.79
Determine the value of the coefficient of correlation, r, for the following data. X 4 6 7 11 16 17 21 Y 18 13 13 8 7 7 5 (Round the intermediate values to 3 decimal places. Round your answer to 3 decimal places.) r= ?
Determine the value of the coefficient of correlation, r, for the following data. X 2 6 7 11 16 17 21 Y 18 15 13 8 7 7 6 (Round the intermediate values to 3 decimal places. Round your answer to 3 decimal places.) r =
If Pearson’s r for two variables is –.4 in a sample of 38 subjects, what is the t value you would use to test that correlation for statistical significance? –2.23 –2.40 –2.62 –3.09
Below is data for two variables, X and Y. Answer the questions that follow. X Y X-MX Y-MY (X-MX)2 (Y-MY)2 (X-MX)(Y-MY) 0 4 -3 -1 9 1 3 2 3 -1 -2 1 4 ___ 4 7 1 ___ 1 4 2 6 6 3 1 ___ 1 3 MX = _____; MY = _____ MX = 5; MY = 4 MX = 3; MY = 5 MX = 4; MY = 4 MX = 12; MY = 20 What...
The data below shows the reading (x) and math scores (y) of a number of students. Reading Scores Math Scores 1 4 2 5 3 8 3 6 4 7 5 7 6 8 7 10 7 9 8 10 8 9 9 10 r2 = 85.62%. It represents the percent of the variances in the values of Y that can be explained by knowing the value of X. 85.62% of the variation of Y (math scores) is explained by...
37. Use the following data set: x: 4, 7, 13, 19 and y: 6, 10, 11, 21 Find the correlation coefficient "r" A. 0.862 B. 0.943 C. 0.725 D. 0.607
Function f is graphed. y 9 8 7 6+ y = f(x) CT 4+ 3+ 2+ 1+ H4+ 29-8-7 -6 -5 -4 3-2 1 2 3 4 5 6 7 8 9 -2 -3 4 -50 1 A 2+ M من 4 -58 -6 -8 -9 What appears to be the value of lim f(x)? 20+ 07 0-5 Unbounded Function g is graphed. → see y= g(2) 9 8 7+ 6+ 5+ 4+ es 2+ 1+ A+++ -9 -8 -7...
Values of f (x, y are in the table below. 68 10 у0.2 5 719 4 6 5 Let R be the rectangle: 4.0 Sx 4.2 0.0 S y 0.4. Based on the values given in the table, find Riemann sums which are reasonable over and underestimates for f x, y) dA with ΔΧ-0.1 and Δy 0.2. Enter the exact answers. Lower sum Upper sum Values of f (x, y are in the table below. 68 10 у0.2 5 719...
1. For cach of the data sets shown below, calculater. (6) X y 16 27 3 5 21 3 4 4 3
4. When x- 0, what is the value of y? le below to answer these questions. ㄨㄧㄚ 3 13 5 27 5. Calculate the average rate of change on the interval 12,4]. 6. Calculate the average rate of change on the interval [3, 6]. 6 81 7. Over which interval is the rate of change the greatest? balloon contains 4 liters of helium gas. The pressure of the gas is 210 kiloPascals. Th the volume is measured and recorded below....