(solved) Math 225N Week 8 Assignment Coefficient of Determination - Essay Prowess

(solved) Math 225N Week 8 Assignment Coefficient of Determination

(solved) Math 225N Week 8 Assignment Coefficient of Determination

Math 225N Week 8 Assignment Coefficient of Determination

Week 8 Assignment Coefficient of Determination

Question

A medical experiment on tumor growth gives the following data table.

xy
5738
6150
6376
6897
72113

The least squares regression line was found. Using technology, it was determined that the total sum of squares (SST) was 3922.8 and the sum of squares of regression (SSR) was 3789.0. Calculate R2, rounded to three decimal places.

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Question

A scientific study on mesothelioma caused by asbestos gives the following data table.

Micrograms of asbestos inhaledArea of scar tissue (cm2)
58162
62189
63188
67215
70184

Using technology, it was determined that the total sum of squares (SST) was 1421.2 and the sum of squares due to error (SSE) was 903.51. Calculate R2 and determine its meaning. Round your answer to four decimal places.

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Question

A scientific study on speed limits gives the following data table.

Average speed limitAverage annual fatalities
2516
2729
2938
3271
3593

Using technology, it was determined that the total sum of squares (SST) was 4029.2, the sum of squares regression (SSR) was 3968.4, and the sum of squares due to error (SSE) was 60.835. Calculate R2 and determine its meaning. Round your answer to four decimal places

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Question

A new mine opened and the number of dump truck loads of material removed was recorded. The table below shows the number of dump truck loads of material removed and the number of days since the mine opened.

Days (since opening)# of dump truck loads
245
553
860
960
1267

A least squares regression line was found. Using technology, it was determined that the total sum of squares (SST) was 278.0 and the sum of squares of regression (SSR) was 274.3. Use these values to calculate the coefficient of determination. Round your answer to three decimal places

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Question

A new mine opened and the number of dump truck loads of material removed was recorded. The table below shows the number of dump truck loads of material removed and the number of days since the mine opened.

Days (since opening)# of dump truck loads
654
978
1492
1786
21121

A least squares regression line was found. Using technology, it was determined that the total sum of squares (SST) was 2349 and the sum of squares of error (SSE) was 329. Use these values to calculate the coefficient of determination. Round your answer to three decimal places

Select the correct answer below: