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QUESTION 4 Given the following class data 12.3-13.5 The class boundary is: 12.35 - 14.50 O...
QUESTION 4 Find the variance for the given data. Round your answer to one more decimal...
QUESTION 4 Find the variance for the given data. Round your answer to one more decimal place than the original data. Compute the variance. A class of sixth grade students kept accurate records on the amount of time they spent playing video games during a one-week period. The times (in hours) are listed below 11.8 12.4 17.5 145 179 21.6 15.7 30.4 26.6 29.2 O 46.97 O 46.87 O 42.27 O 19443 QUESTION 5
5) Descriptive statistics. a) For each of the following classes, find: • lower class boundary upper...
5) Descriptive statistics. a) For each of the following classes, find: • lower class boundary upper class boundary class width class mid-point (i) 8-21 (4 marks) (ii) 1.54 - 3.47 (4 marks) b) The number of pizzas sold by a restaurant over the month of June was recorded and the data collected are shown below. 22 54 11 34 18 21 15 33 47 44 46 13 24 40 10 29 27 43 32 23 35 14 52 16 24...
Exp data given o Graph a Titration curve (can be done using excel or hand drawn...
Exp
data given
o Graph a Titration curve (can be done using excel or hand drawn on graph paper) o Use the titration curve to find pH at the equivalence point - pka of Acetic acid compare the experimental the accuracy of the titration (for the pka value) X100% Imean experimental value - actual value Actual value Note: pka = -log, Questions 1) Define pH 2) Define pka Volume NaOH added (ml) pH 2 3.4 3 3 .7 43.9 54...
< Problem Set #4 (ch 14) Exercise 14.50 - Enhanced - with Feedback The data below...
< Problem Set #4 (ch 14) Exercise 14.50 - Enhanced - with Feedback The data below show the concentration of N205 versus time for the following reaction: N2O5 (g) → NO3(g) + NO2(g) Time (s) [N2O5] (M) 1.000 0.822 0.677 25 50 0.557 0.458 0.377 100 125 150 175 200 0.310 0.255 0.210 Part B Determine the value of the rate constant. Express the rate constant to three significant figures VAZO + # O ? k = Submit Request Answer...
Probability and statistics for engineers O d. 25% Question 13 Given the following data 12, 15,...
Probability and statistics for engineers
O d. 25% Question 13 Given the following data 12, 15, 17, x, 20, 22, and their mean is 17. Find the value of x Not yet answered Marked out of 2 O a. 15 P Flag question O b. 16 Oc.17 O d. 18.5 Cette 14 A sample consists of four observations: (1,3,5,7). What is the dard deviation?
Given the training data in Question 1 below| (on buying RRSP8), predict the class of the...
Given the training data in Question 1 below| (on buying RRSP8), predict the class of the following new example using k-nearest-neighbor classification fork = 5: sector = oil industry, income = medium, self-employed = yes, credit-rating fair. For distance measure, use the following similarity measure: similarity(tupleAtupleB)-4-.(w"S(ab/4), where S(ab) is 1 if parameter a equals parameter b and o otherwise The parameters atand biare either Sector, income, self-employed, or credit-rating. The weights wiare all 1, except for income, which is 2....
Given the training data in Question 1 below| (on buying RRSP8), predict the class of the following new example using k...
Given the training data in Question 1 below| (on buying RRSP8), predict the class of the following new example using k-nearest-neighbor classification fork = 5: sector = oil industry, income = medium, self-employed = yes, credit-rating fair. For distance measure, use the following similarity measure: similarity(tupleAtupleB)-4-.(w"S(ab/4), where S(ab) is 1 if parameter a equals parameter b and o otherwise The parameters atand biare either Sector, income, self-employed, or credit-rating. The weights wiare all 1, except for income, which is 2....
Question 2 O pts Given the following data: Period Demand 1 2 3 4 5 212...
Question 2 O pts Given the following data: Period Demand 1 2 3 4 5 212 234 209 221 259 203 What is the 3-period simple mov average MAPE? 17.04 1.76 11.29 None of the above
4. Let x- be a two dimensional feature vector (a) Suppose that we collect the following four measurements for an input belonging to class a x1 -6 -10 10 -6 Assuming that the class conditional density...
4. Let x- be a two dimensional feature vector (a) Suppose that we collect the following four measurements for an input belonging to class a x1 -6 -10 10 -6 Assuming that the class conditional density is Gaussian, find the maximum likelihood estimates of the mean vector and covariance matrix for class ω (b) Suppose that data come from two classes, a, and co,. Assume that . The a priori class probabilities are equal . The class conditional densities are...
1. Given the following data: years 0-9 10-19 20-29 frequency 4 6 8 a. Identify lower...
1. Given the following data: years 0-9 10-19 20-29 frequency 4 6 8 a. Identify lower class limits b. Identify upper class limits c. Identify the class boundaries 2. Given the following data: Cigarette CO (mg) Frequency 2-6 7-11 2 12-16 6 17-21 8 a. Identify the class width b. Identify the class midpoints c. Does the frequency distribution appear to have a normal distribution? 3. Histogram Cigarette Tar Frequency Table Tar (mg) Freq. 2-5 6-9 2 10-13 6 14-17...
QUESTION 4 Find the variance for the given data. Round your answer to one more decimal place than the original data. Compute the variance. A class of sixth grade students kept accurate records on the amount of time they spent playing video games during a one-week period. The times (in hours) are listed below 11.8 12.4 17.5 145 179 21.6 15.7 30.4 26.6 29.2 O 46.97 O 46.87 O 42.27 O 19443 QUESTION 5
5) Descriptive statistics. a) For each of the following classes, find: • lower class boundary upper class boundary class width class mid-point (i) 8-21 (4 marks) (ii) 1.54 - 3.47 (4 marks) b) The number of pizzas sold by a restaurant over the month of June was recorded and the data collected are shown below. 22 54 11 34 18 21 15 33 47 44 46 13 24 40 10 29 27 43 32 23 35 14 52 16 24...
Exp
data given
o Graph a Titration curve (can be done using excel or hand drawn on graph paper) o Use the titration curve to find pH at the equivalence point - pka of Acetic acid compare the experimental the accuracy of the titration (for the pka value) X100% Imean experimental value - actual value Actual value Note: pka = -log, Questions 1) Define pH 2) Define pka Volume NaOH added (ml) pH 2 3.4 3 3 .7 43.9 54...
< Problem Set #4 (ch 14) Exercise 14.50 - Enhanced - with Feedback The data below show the concentration of N205 versus time for the following reaction: N2O5 (g) → NO3(g) + NO2(g) Time (s) [N2O5] (M) 1.000 0.822 0.677 25 50 0.557 0.458 0.377 100 125 150 175 200 0.310 0.255 0.210 Part B Determine the value of the rate constant. Express the rate constant to three significant figures VAZO + # O ? k = Submit Request Answer...
Probability and statistics for engineers
O d. 25% Question 13 Given the following data 12, 15, 17, x, 20, 22, and their mean is 17. Find the value of x Not yet answered Marked out of 2 O a. 15 P Flag question O b. 16 Oc.17 O d. 18.5 Cette 14 A sample consists of four observations: (1,3,5,7). What is the dard deviation?
Given the training data in Question 1 below| (on buying RRSP8), predict the class of the following new example using k-nearest-neighbor classification fork = 5: sector = oil industry, income = medium, self-employed = yes, credit-rating fair. For distance measure, use the following similarity measure: similarity(tupleAtupleB)-4-.(w"S(ab/4), where S(ab) is 1 if parameter a equals parameter b and o otherwise The parameters atand biare either Sector, income, self-employed, or credit-rating. The weights wiare all 1, except for income, which is 2....
Given the training data in Question 1 below| (on buying RRSP8), predict the class of the following new example using k-nearest-neighbor classification fork = 5: sector = oil industry, income = medium, self-employed = yes, credit-rating fair. For distance measure, use the following similarity measure: similarity(tupleAtupleB)-4-.(w"S(ab/4), where S(ab) is 1 if parameter a equals parameter b and o otherwise The parameters atand biare either Sector, income, self-employed, or credit-rating. The weights wiare all 1, except for income, which is 2....
Question 2 O pts Given the following data: Period Demand 1 2 3 4 5 212 234 209 221 259 203 What is the 3-period simple mov average MAPE? 17.04 1.76 11.29 None of the above
4. Let x- be a two dimensional feature vector (a) Suppose that we collect the following four measurements for an input belonging to class a x1 -6 -10 10 -6 Assuming that the class conditional density is Gaussian, find the maximum likelihood estimates of the mean vector and covariance matrix for class ω (b) Suppose that data come from two classes, a, and co,. Assume that . The a priori class probabilities are equal . The class conditional densities are...
1. Given the following data: years 0-9 10-19 20-29 frequency 4 6 8 a. Identify lower class limits b. Identify upper class limits c. Identify the class boundaries 2. Given the following data: Cigarette CO (mg) Frequency 2-6 7-11 2 12-16 6 17-21 8 a. Identify the class width b. Identify the class midpoints c. Does the frequency distribution appear to have a normal distribution? 3. Histogram Cigarette Tar Frequency Table Tar (mg) Freq. 2-5 6-9 2 10-13 6 14-17...
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