Briefly describe the methods of collecting primary data
Q: Most supermarkets use scanners at the checkout counters. The data collected this way can be used to…
A:
Q: Observational data are generated by designed experiments and therefore the independent x variables…
A: Experimental study: If the researcher influences or manipulates one of the variables in the study…
Q: What information does a residual plot give us?
A: A residual plot is the graph with residuals on vertical axis and independent variable on horizontal…
Q: Range of ankle motion is a contributing factor to falls among the elderly. Suppose a team of…
A: Introduction:Here, the response variable, y, is the range of ankle motion while wearing typical…
Q: Please see my 2 previous asked questions if data is needed from there to answer this question. Run…
A: Use the given data to perform regression analysis using excel. SUMMARY OUTPUT…
Q: ing the next task, move the variable "Social Networks - Facebook, Twitter, etc" to column A on the…
A: Given: The predicted multiple regression from previous calculations is Social network funding =…
Q: Ocean currents are important in studies of climate change, as well as ecology studies of dispersal…
A: x y x2 y2 xy 76 14.2 5776 201.64 1079.2 79 19.6 6241 384.16…
Q: Why would the male lifespan not be the dependent variable?
A: In an experiment, the independent variable is the variable that is deliberately manipulated or…
Q: Figures 2 & 3 below depict the top international tourist arrivals (by country) to Australia in 2010…
A: Given information: The graphs that depict the top international tourist arrivals to Australia in…
Q: () What type of graph is shown above? (H) Which variable is the explanatory variable? (iii) Give the…
A: Since you have posted a question with multiple sub-parts, we will answer the first three sub-parts…
Q: Most supermarkets use scanners at the checkout counters. The data collected this way can be used to…
A: Solution Given r squared = 59.7%.
Q: Run two regressions in Excel using the provided Excel file “Layoffs”. The Excel file Layoffs…
A: To perform the regression analysis in excel follow the step given below. Enter the data into…
Q: regression
A: Here it is asked to find the degrees of freedom in a regression model with an intercept term that…
Q: The table below shows the number of state-registered automatic weapons and the murder rate for…
A:
Q: Use Data Set 7 found on my website for this question. Consider two models: Big and Small. Both…
A: Given Information: Consider the given dataset: Exam Tot Female Year Time H tot H4 H3 84 1 2 32…
Q: A traffic light is installed to allow traffic from a seldom used side street to cross a 4-lane…
A: H0: p(red) = 0.8, p(yellow) = 0.05, p(green) = 0.15 Ha: either of the proportion is different
Q: The regression line always gives an exact model for data. true or false
A: Regression line gives the relationship between the dependent variables and independent variable.
Q: The table below gives the number of parking tickets received in one semester and the GPA for five…
A: Since we have given the equation for regression line ŷ = b0 + b1x
Q: Write a detail note on REGRESSION?
A: Regression determines the strength and nature of a relationship between one dependent various…
Q: The November 24, 2001, issue of The Economist published economic data for 15 industrialized nations.…
A:
Q: A companies HR manager has noticed that they are not retaining their talent. The HR manager believes…
A:
Q: d. What type of variable is the response (categorical or quantitative)? How about the explanatory…
A: Given that X represents height of the athlete And Y denotes the length of the jump.
Q: Regarding a scatterplot, a. identify one of its uses. b. what property should it have to obtain a…
A: From the given information, a) Uses of scatter plot: It is the graph of two quantitative variables…
Q: Prehistoric pottery vessels are usually found as sherds (broken pieces) and are carefully…
A: It is given that x be the body diameter in centimeters and y be the height in centimeters of…
Q: Explain why it is not a good idea to exclude an intercept, b0 , from any linear regression model?
A: A line of regression is given as, y=b0+b1x Where, b0 is the intercept. b1 is the slope. x is the…
Q: A study was performed looking at the effect of mean ozone exposure on change in pulmonary function.…
A: Introduction: Denote μ1, μ2 as the true mean change in FEV for the high-ozone and low-ozone exposure…
Q: Please import the resilience dataset into R by the R command below. resilience <-…
A: The question requires importing the "resilience" dataset into R and reordering the levels of the…
Q: 2. One of the ways to address the problem of multicollinearity is to do ridge regression. Give a…
A: Note: As requested, the answer has been provided for 4.2 and 4.3 only.
Q: A B D. 1 Individual Age Systolic blood pressure 39 144 2. 47 220 3 45 138 5. 4 47 145 65 162 46 142…
A: Given data :
Q: Give a research problem using objective method
A: A research problem is a statement about a problem that needs to be solved, a condition that needs to…
Q: This table shows the number of reported cases of a disease in a country. Week Size 400 500 2. 625 3.…
A: Given: n = 4 Formula Used: The regression model is: Y = a + bX Slope b = n∑XY-∑X∑Yn∑X2-∑X2 Intercept…
Q: Suppose you have access to a database with the variables listed below. Choose two variables you are…
A: The objective of the question is to identify two variables from the given list that might have a…
Q: Ocean currents are important in studies of climate change, as well as ecology studies of dispersal…
A: (a) Obtain the values of given sums. The values of given sums is obtained below as follows:…
Q: A student has access to rainfall and sunshine data for a particular location over a period of 60…
A: a) From the given output, the value of R-square is 22.1%. That is, r2=22.1% =0.221r=0.221…
Q: State the regression identity for degrees of freedom in this case of three predictor variables.
A: The regression identify for degrees of freedom with k predictors and n observations and having total…
Q: In a study on speed control, it was found that the main reasons for regulations were to make traffic…
A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: Prehistoric pottery vessels are usually found as sherds (broken pieces) and are carefully…
A: (a) Determine the value of the standard error. The value of the standard error form the given…
Q: Provide a graphical display of respondent marital status (MARITAL), where: 1 = Married; 2 = Widowed;…
A: Given that Marital status of persons Marital Status Number of persons Married 1 widows 2…
Q: Marks obtained by students in a Chemistry test was adjusted because of an error in one of the…
A: SolutionGiven marks obtained by student in a chemistry test was adjusted .
Q: the University of Denver Infant Study Center to participate in one of a number of experiments…
A: Given: Groups represent the birth month. k represent the groups. k=3 The degrees of freedom for the…
Briefly describe the methods of collecting primary data
AI-generated content may present inaccurate or offensive content that does not represent bartleby’s views.
Unlock instant AI solutions
Tap the button
to generate a solution
Click the button to generate
a solution
- Prehistoric pottery vessels are usually found as sherds (broken pieces) and are carefully reconstructed if enough sherds can be found. Information taken from Mimbres Mogollon Archaeology by A. I. Woosley and A. J. McIntyre (University of New Mexico Press) provides data relating x = body diameter in centimeters and y = height in centimeters of prehistoric vessels reconstructed from sherds found at a prehistoric site. The following Minitab printout provides an analysis of the data. Predictor Coef SE Coef T P Constant -0.212 2.429 -0.09 0.929 Diameter 0.7527 0.1686 5.33 0.013 S = 4.16190 R-Sq = 81.2% (c) The formula for the margin of error E for a c% confidence interval for the slope ? can be written as E = tc(SE Coef). The Minitab display is based on n = 12 data pairs. Find the critical value tc for a 90% confidence interval in the relevant table. Then find a 90% confidence interval for the population slope ?. (Use 3 decimal places.) tc lower limit upper…What does this data tell you? Section 4 appears to be a challenge; remember you must compare data to the national data and determine if there are any statistically significant differences at the 0.5 level. For Table 4-1, Information for national is given in table 4-4. You must then comment if it is statistically significant. For table 4-2 and 4-3 you can use formulas with data from table 4-4 (hints below) to find the national and comment if it is statistically significant. Here is a hint: Table 4-2: National Medicare Reimbursement/National Number of Discharges = Average National Reimbursement Hope that helps! Let me know if you have any questions. Table 4-1 Average Length of Stay (ALOS) Average Length of Stay (ALOS) DRG Hospital National Statistically Significant 088 4.6 5.0 (5.0-4.6 = 0.4 0.5) Yes (4.7 3.6 = 1.1 > 0.5) Yes (8.2-7.9 = 0.3 <0.5) No (7.4 -7.3 = 0.1< 0.5) No Table 4-2 Average Charges Average Charges DRG Hospital National Statistically Significant 088 $13,952 14,208…A research study was conducted at a local college collecting data on the models (brands) of cars parked in the student parking lot. This type of data collected would be considered/described as Qualitative Data or Quantitative Data?
- Define multiperiod forecasting. Which Method Should we Use?Two of the hottest smartphones on the market are the newly released iPhone6 and the Samsung Galaxy S6. CNet.com offers online reviews of all major cell phones, including battery life tests. In a review of the iPhone6, the talk-time battery life of 35 iPhones was measured. Similarly, the talk-time battery life of 30 Galaxy S6s was measured. Two outputs are given below. Which is appropriate for analyzing the data collected? Output 1 Output 2 Using the StatCrunch output chosen above, determine if there is a difference in the mean battery life for the two phones. Use a significance level of 0.01 when conducting the test. Select the appropriate hypotheses. Make sure the notation used in the hypotheses agrees with the type of samples selected in the output. Ho:μd=0Ho:μd=0Ha:μd<0Ha:μd<0 Ho:μd=0Ho:μd=0Ha:μd≠0Ha:μd≠0 Ho:μd=0Ho:μd=0Ha:μd>0Ha:μd>0 Ho:μ1=μ2Ho:μ1=μ2Ha:μ1>μ2Ha:μ1>μ2 Ho:μ1=μ2Ho:μ1=μ2Ha:μ1≠μ2Ha:μ1≠μ2 Ho:μ1=μ2Ho:μ1=μ2Ha:μ1<μ2Ha:μ1<μ2 αα =…During a particularly dry growing season in a southern state, farmers noticed that there is a delicate balance between the number of seeds that are planted per square foot and the yield of the crop in pounds per square foot. The yields were the smallest when the number of seeds per square foot was either very small or very large. The data in the table show various numbers of seeds planted per square foot and yields (in pounds per square foot) for a sample of fields. A 2-column table with 15 rows. Column 1 is labeled number of seeds (per square foot) with entries 28, 75, 30, 43, 71, 35, 40, 59, 66, 79, 85, 81, 16, 33, 16. Column 2 is labeled yield (pounds per square foot) with entries 131, 171, 132, 166, 169, 150, 161, 183, 173, 161, 147, 157, 86, 145, 86. Which scatterplot represents the seed and yield data? A graph titled number of Seeds and Crop Yield has seeds (per square foot) on the x-axis, and yard (pounds per square foot) on the y-axis. The points curve up to a point, and…
- you take a bar of soap and weigh it after each shower. will the regression line be positive or negativeYou work as a data scientist for a real estate company in a seaside resort town. Your boss has asked you to discover if it's possible to predict how much a home's distance from the water affects its selling price. You are going to collect a random sample of 7 recently sold homes in your town. You will note the distance each home is from the water (denoted by x, in km) and each home's selling price (denoted by y, in hundreds of thousands of dollars). You will also note the product x.y of the distance from the water and selling price for each home. (These products are written in the row labeled "xy"). (a) Click on "Take Sample" to see the results for your random sample. Distance from the water, .x (in km) Take Sample Selling price, y (in hundreds of thousands of dollars) xy Send data to calculator Based on the data from your sample, enter the indicated values in the column on the left below. Round decimal values to three decimal places. When you are done, select "Compute". (In the table…A recent experiment included measuring the weight of a package of raw almonds. This type of data would be considered a: Discrete variable or Continuous variable?
