SIMULATIONA client has gathered weather data on which regions have high temperatures. The client would like a visualization to gain a better understanding of the data.INSTRUCTIONSPart 1Review the charts provided and use the drop-down menu to select the most appropriate way to standardize the data.Part 2Answer the questions to determine how to create one data set.Part 3Select the most appropriate visualization based on the data set that represents what the client is looking for.If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Answer(s): A
Part 1Select Table 2. Table 2 contains mixed temperature scales (°F and °C) that must be standardized before visualization.Variable: Temperature/scaleAction: CorrectValue to correct: 50 °CPart 2Method: Data matchingJoin variable: Zip codeYou need to merge the two tables by aligning matching records, which is a data-matching (join) operation, and ZIP code is the shared, uniquely identifying field linking each region's weather reading to its city.Part 3Choose the choropleth map (the first option).A choropleth map best shows geographic variation in temperature by coloring each state (or region) according to its recorded value. This lets the client immediately see where the highest and lowest temperatures occur across the U.S. without distracting elements like bubble size or combined chart axes.
SIMULATIONA data scientist needs to determine whether product sales are impacted by other contributing factors. The client has provided the data scientist with sales and other variables in the data set.The data scientist decides to test potential models that include other information.INSTRUCTIONSPart 1Use the information provided in the table to select the appropriate regression model.Part 2Review the summary output and variable table to determine which variable is statistically significant.If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Part 1Linear regression.Of the four models, linear regression has the highest R² (0.8), indicating it explains the greatest proportion of variance in sales.Part 2Var 4 Net operations cost.Net operations cost has a p-value of essentially 0 (far below 0.05), indicating it is the only additional predictor statistically significant in explaining sales. Neither inventory cost (p0.90) nor initial investment (p0.23) reach significance.
A data scientist is building an inferential model with a single predictor variable. A scatter plot of the independent variable against the real-number dependent variable shows a strong relationship between them. The predictor variable is normally distributed with very few outliers. Which of the following algorithms is the best fit for this model, given the data scientist wants the model to be easily interpreted?
Answer(s): C
A data scientist wants to evaluate the performance of various nonlinear models. Which of the following is best suited for this task?
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