Homework Answers
41) Comparing the mean between the two data sets:
Answer:
B. Data set B has a larger mean
Explanation: The histogram of data set A is right skewed and the histogram of data set B is left skewed. In both the data set the frequencies are same but the class intervals are different. So if we calculate mean of both data set, the mean of data set A is smaller than the data set B.
42) Comparing the SD between the two data sets:
Answer:
C. Data set A and B have the same SD
Explanation: As the data set A and data set B have the same frequencies and different class intervals. While calculating standard deviation the class interval do not affects because the frequencies are same. Hence the both data set have same SD.
5) (2 pts) Both data sets below have similar means. One has a SD of 6.7...
5) (2 pts) Both data sets below have similar means. One has a SD of 6.7 and the other has a SD of 11.2. Match SD with the pictures? Explain. 10 8 6 4 2 0 60 65 70 75 80 85 90 40 60 80 100 120 140
8. Following are the 'Handic spectra for two isomeric hromalkancs, A and B (compon following page) with molecular...
8. Following are the 'Handic spectra for two isomeric hromalkancs, A and B (compon following page) with molecular formula C.H.Br. Draw their structure. (compound B is on the 1Η COCI (Solvent) www wwwwwwwwwwwwww 95 90 85 80 75 70 wwww 60 55 50 45 65 40 35 30 25 20 15 10 CDCI (Solvent) TMS 95 90 RS 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 -5 -10
Question 11 For any normally distributed data: (Write the answers without % sign) A: About what...
Question 11 For any normally distributed data: (Write the answers without % sign) A: About what percent of data is within 1 standard deviation of the mean? B: About what percent of data is within the mean and 2 standard deviations above the mean? C: About what percent of data is more than 2 standard deviations above the mean? Question 12 The scores on a test by a large class are normally distributed. The mean score is 72 with a...
Question 2 3 pts The boxplots below show the distribution of test scores for two classes....
Question 2 3 pts The boxplots below show the distribution of test scores for two classes. Class A Class B 0 10 20 30 40 50 60 70 80 90 100 Test scores Which of the following statements is a valid conclusion that can be drawn from the boxplots? Choose all that apply. Class A and B have approximately the same percentage of students who scored 70 or higher on the test. Class A has a greater percentage of students...
1. Which of the following algorithms requires the most extra space when implemented? A. Quicksort B....
1. Which of the following algorithms requires the most extra space when implemented? A. Quicksort B. Mergesort C. Radix sort D. All use the same amount of extra space 2. Sort this array into ascending order: 80 90 70 85 60 40 50 95. Assume the pivot is 40. (SHOW WORK) A. (40) and (50 60 70 80 85 90 95) B. () and (80 90 70 85 60 50 95) C. () and (50 60 70 80 85 90...
We have these two datasets from a sample with 5 observations (n = 5)
We have these two datasets from a sample with 5 observations (n = 5): Monthly check fee at a bank ($): 20, 22, 15, 30, 26 Monthly service fee at a bank ($): 12, 0, 5, 7, 10 Calculate the following for each dataset (if you use Excel, be sure to explain the formulas): a) Measures of Central Tendency: Mean, Median, Mode b) Measures of Dispersion: Range, Standard Deviation, and Coefficient of Variation (CV)
Price level 20- 18- 16- 14- 12- 10- 8- LRAS SRAS 4 2 0 AD 0...
Price level 20- 18- 16- 14- 12- 10- 8- LRAS SRAS 4 2 0 AD 0 10 20 30 40 50 60 70 80 90 100 Real GDP (billions of dollars)
Consider the following time series. t 1 23 4 5 6 7 Yt 83 60 45 36 31 30 34 a. Which of the follow...
Consider the following time series. t 1 23 4 5 6 7 Yt 83 60 45 36 31 30 34 a. Which of the following is the correct time series plot? TimeSeriesValue 90 80 70 60 50 40 20 10 TimePeriodit 2 I imeSeriesValue 90 80 70 60 50 40 20 10 2 TimePeriodit 3. TimeSeries Value 90 80 60 50 40 30 10 TimePeriodit 4 TimeSeries Value 90 80 70 60 50 40 30 10 2 TimePeriod t -...
Question 4 Figure 2-16 120 110+ A 100 C 90 D 80 70 60 50 40...
Question 4 Figure 2-16 120 110+ A 100 C 90 D 80 70 60 50 40 30 20 10 10 20 30 40 60 60 70 80 90 100 Widgets Refer to Figure 2-16. The opportunity cost of obtaining approximately 20 additional gadgets by moving from point B to point C is O 0 widgets. 10 widgets. 20 widgets none of the above; the economy cannot move from pointB to point C.
8. (10 points) The following spectra correspond to compounds AE listed below con pound to its...
8. (10 points) The following spectra correspond to compounds AE listed below con pound to its corresponding spestre Label very simal on the spectrum (as Co . ctc.). Spectrum CDCI, 190 160 170 160 150 140 130 120 110 100 80 80 Spectrum 2 70 80 50 40 30 20 10 O le CDCI, 190 180 170 180 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 O de CDCI, 190 180 170 180...
5) (2 pts) Both data sets below have similar means. One has a SD of 6.7 and the other has a SD of 11.2. Match SD with the pictures? Explain. 10 8 6 4 2 0 60 65 70 75 80 85 90 40 60 80 100 120 140
8. Following are the 'Handic spectra for two isomeric hromalkancs, A and B (compon following page) with molecular formula C.H.Br. Draw their structure. (compound B is on the 1Η COCI (Solvent) www wwwwwwwwwwwwww 95 90 85 80 75 70 wwww 60 55 50 45 65 40 35 30 25 20 15 10 CDCI (Solvent) TMS 95 90 RS 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 -5 -10
Question 11 For any normally distributed data: (Write the answers without % sign) A: About what percent of data is within 1 standard deviation of the mean? B: About what percent of data is within the mean and 2 standard deviations above the mean? C: About what percent of data is more than 2 standard deviations above the mean? Question 12 The scores on a test by a large class are normally distributed. The mean score is 72 with a...
Question 2 3 pts The boxplots below show the distribution of test scores for two classes. Class A Class B 0 10 20 30 40 50 60 70 80 90 100 Test scores Which of the following statements is a valid conclusion that can be drawn from the boxplots? Choose all that apply. Class A and B have approximately the same percentage of students who scored 70 or higher on the test. Class A has a greater percentage of students...
Price level 20- 18- 16- 14- 12- 10- 8- LRAS SRAS 4 2 0 AD 0 10 20 30 40 50 60 70 80 90 100 Real GDP (billions of dollars)
Consider the following time series. t 1 23 4 5 6 7 Yt 83 60 45 36 31 30 34 a. Which of the following is the correct time series plot? TimeSeriesValue 90 80 70 60 50 40 20 10 TimePeriodit 2 I imeSeriesValue 90 80 70 60 50 40 20 10 2 TimePeriodit 3. TimeSeries Value 90 80 60 50 40 30 10 TimePeriodit 4 TimeSeries Value 90 80 70 60 50 40 30 10 2 TimePeriod t -...
Question 4 Figure 2-16 120 110+ A 100 C 90 D 80 70 60 50 40 30 20 10 10 20 30 40 60 60 70 80 90 100 Widgets Refer to Figure 2-16. The opportunity cost of obtaining approximately 20 additional gadgets by moving from point B to point C is O 0 widgets. 10 widgets. 20 widgets none of the above; the economy cannot move from pointB to point C.
8. (10 points) The following spectra correspond to compounds AE listed below con pound to its corresponding spestre Label very simal on the spectrum (as Co . ctc.). Spectrum CDCI, 190 160 170 160 150 140 130 120 110 100 80 80 Spectrum 2 70 80 50 40 30 20 10 O le CDCI, 190 180 170 180 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 O de CDCI, 190 180 170 180...
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