Take a Test Shaqualle Simpson Shaquille Simpson 3/23/17 11.00 PM QMTH210 Section

Question

Take a Test Shaqualle Simpson Shaquille Simpson 3/23/17 11.00 PM QMTH210 Section 002 Quiz: Chapter 7 Quiz 22 This Quiz: 4 pts possib 1 of 40 This Question: 1 pt ABology student who created a regression model to use abird's Height when penched for predotng Wingspan made the following two statementsAssuming the calculations were done correcty explain whatis wrong with each interpretation. MyR' of shows that this linear modelis appropriate. blAbid 10 inches will have a wingspan of 17inches what is wrong wth the statement My R of93%, shows that this near modelis appropriate? A TrevaueofR representsee probabaty that a data port does not elinear model, alageRa means that most points donestthe modeland he modelis not approprate Awlued oss is not a large enough value of is95%. Alarge could also be due to an outler. o D. There is nothing wrong the statement a value ofsas, shows that this knear modelis appropriate. What is wrong wth the statement Abid 10 inches tal w have a wingspan of 17 nches A Predictions based on a regression ine for average valueseryfor a given x The actual wingspan wi vary around the predoton o B. Ths ear modelis meant to predct Height using wingspan, and appropriate stanement would be 'A bid with a wingspan of 17 inches have hegrtof10inches Oc. The variables Height and wingspan should not be using the same units (inches) of 17 inches, O D. There is neeing wrong wth the statement, assuming al calculations are correct bird 10 inches tall have a wngspan Click to select your answer.

Explanation / Answer

in 1) the value of R^2 = 93%

*That is 93% of proportion of total variation in the dependent variable ( y ) which is explained by independent variable (X).

So the given linear model is appropriate.

Option 4) is correct.

PART B )

x = height of bird

y = wingspan.

for height( x ) = 10 , the wingspan ( y ) = 17

By using least square line we can predict it.

There is nothing wrong with the statement assuming that the calculations are correct .

Option (4) is correct

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