(8 Marks) c) The Variance and Standard Deviation. SQUARED DEVIATION TEMPERATURE (°C) 3.5 4.0 5.0 gol...
(8 Marks) c) The Variance and Standard Deviation. EMPERATURE (°C) MEAN DEVIATION SQUARED DEVIATION 2.82 - 3.5 4.0 5.0 gol 3.5-5-2=-1.7 4.0-3.5=0.5-172-142 -0.2 -0.1 6.3 1.9 Standard Deviation; Page 2 Variance;
Describe the variance and standard deviation ing For the following scores, find the (a) mean. (b) median, (c) sum of squared deviations (a) variance, and (e) standard deviation 5, 0, 5, 4, 5, 1, 0, 2, 1, 3, 3, 3, 4, 5, 1, 2, 2, 2,2, 1,2 o M-2524 (Round to three decimal places as needed) (b) Find the median. Median 2 (Round to three decimal places as needed) (c) Find the sum of squared deviations. Enter your answer in...
Question 8: (12 marks) For this question you are required to find the standard deviation for a set of data. The answer alone will not achieve full marks. There are many tools available to calculate the standard deviation. Here you are required to use several of the tools and show your working out to earn the marks. The data is the test results of 21 students who sat a mathematics quiz worth 100 marks. Results: 60, 47, 17, 43, 30,...
20. Calculate the range, variance, and standard deviation of the following data set:5, 5, 6, 6, 6, 8, 8, 8, 8, 10, 10, 11, 12, 12, 20(Points: 5) Range = 15; Variance = 225; Standard Deviation = 7.5 Range = 3.85; Variance = 14; Standard Deviation = 3.74 Range = 20; Variance = 15; Standard Deviation = 4 Range = 15; Variance = 14.82; Standard Deviation = 3.85
g the standard deviation or variance Aa Aa 0.9 2.4 2.5 3.1 4.0 4.3 4.3 4.4 4.4 4.9 4.9 5.1 5.2 5.6 5.8 3.1 se sample of n 20 scores. Notice that they are listed in order from 0.9 to 5.8, but that some of the scured byThe mean, M, of these scores is 4.0. are asked for the sample standard deviation of these scores. Since you don t have all of them, you YoU ate it. Which of the...
Find the mean, variance and standard deviation for the probability distribution given below: X -3 5 10 12 P(X) 0.562 0.137 0.201 0.1 A. Mean = B. Variance = C. Standard Deviation =
STANDARD DEVIATION Calculate the sample variance of the dataset, by hand, using both methods discussed in class. Student Score L Michelle 2. Ryanne J Bilal Pam 5. Jennifer 6. Dave 7. Joel 8 Sam 9 Justine 10. Juan 62 84 94 Method 1: n-1 Deviation Squared Deviation Score Sample Mean Total: Method 2: 2 (2x m-1 Score a7 Total:
Problem #5 (12 Marks) You have a portfolio with a standard deviation of 30% and an expected return of 18%. You are considering adding one of the two stocks in the table below to your portfolio. After adding the stock, you will have 20% of your money in the new stock and 80% of your money in your existing portfolio. A) Calculate the risk and return of a new portfolio with 20% invested in stock A and 80% in your...
QUESTION 43 (10 Marks) a) Calculate the conductivity of an intrinsic silicon (SI) semiconductor at 27°C if the hole mobility is 460 cm V's and the electron mobility is 1350 cm? Vis! Assume an intrinsic carrier density of 1.45 x 10 carriers/cm' and an electron charge of -0.16 x 10-4C (3 marks) b) Using Figure 8, calculate the conductivity of the Si intrinsic semiconductor if the temperature is increased to 150°C, assuming the same electron and hole mobilities (2 marks)...
The standard deviation is the quadratic mean of what? 5. 6. What do we get if we multiply the average squared deviations by the sample size? 7-9 is the correlation coefficient? Show all your work (Three questions - Thirty points) There are two variables "spiders in your house" (X) and "ants in your house" (Y). What X Y 2 7 15 11 13 11 11 14 10 20 4 The standard deviation is the quadratic mean of what? 5. 6....