Due: Tuesday, 20T7-09-26-1T:o9pn Deliverable: an R source-code file named ps2.r

Question

Due: Tuesday, 20T7-09-26-1T:o9pn Deliverable: an R source-code file named ps2.r Question 1 Data The data attend.csv contains 680 observations on students in a course on microeconomic principles. Analysis . Read the data attend.csv into a new variable 'contextl' and familiarize yourself with the data. . Create a new variable 'attendrt' for the attendance rate (classes attended out of the total number of classes). You can find information about the total number of classes in the labels .txt file . Create a new variable 'hwrt' for the homework completion rate (homeworks turned in of out the total number of homework assignments). You can find information about the total number of homework assignments in the labels .txt file . Run the following linear model using the 'Im' function. Store the result in: modell Interpretations a. Interpret the estimated coefficient on attendrt from modell (eq 1) b. Interpret the estimated coefficient on hwrt from modell (eq 1) c. Predict the termGPA for a student with a 32 ACT and a 2.2 priGPA who attended 28 lectures and turned-in 8 homework assignments. d. Predict the termGPA for a student with a similar attendence and homework pattern who had a 20 ACT and a 3.9 priGPA. e. Intuitively, which variable is more important to the termGPA, ACT or priGPA? f. Predict the termGPA for a student with a 25 ACT and a 3.0 priGPA who attends all the classes, but only finishes half the homework assignments. g. Predict the termGPA for a similarly qualified student who turns in all the homwork assignments, but only attends half the classes. h. Intuitively, which variable is more important to the termGPA, attendance or homework completion? i. Why is it easier to compare attendrt and hwrt than it is to compare priGPA and ACT score?

Explanation / Answer

You may not have contributed to the CPP for certain income you earned through employment or you may have contributed less than required. This can happen if any of the following apply:

Generally, if the total of your CPP and QPP contributions through employment, as shown in boxes 16 and 17 of your T4 slips, is less than $2,544.30, you can contribute 9.9% on any part of the income on which you have not already made contributions. The maximum income for 2016 on which you can contribute to the CPP is $54,900.

To calculate and make additional CPP contributions for 2016, complete Form CPT20, Election to Pay Canada Pension Plan Contributions, and Schedule 8 or Form RC381, Inter-provincial calculation for CPP and QPP contributions and overpayments for 2016, whichever applies, and and claim the appropriate amounts on line 222 of your return and line 310. Form CPT20 lists the eligible employment income on which you can make additional CPP contributions. If you were not a resident of Quebec on December 31, 2016 and contributed only to the CPP, or if you were a resident of Quebec on December 31, 2016 and contributed only to the QPP, you must complete Schedule 8 to calculate your claim. Otherwise, complete Form RC381 to calculate your claim.

Supporting documents

Attach a copy of Form CPT20 and Schedule 8 or Form RC381, whichever applies, to your paper return, or send Form CPT20 to the CRA separately on or before June 15, 2018.

Tax-exempt employment income earned by a registered Indian or person entitled to be registered under the Indian Act – If you are a registered Indian, or person entitled to be registered under the Indian Act, with tax-exempt employment income, and there is no amount shown in box 16 or 17 of your T4 slips, you may also be able to contribute to the CPP on this income. For more benefit and tax information for aboriginal peoples go to Aboriginal peoples.

Completing your tax return

If you were not a resident of Quebec on December 31, 2016, claim on line 222 and on line 310 of Schedule 1, in dollars and cents, the amount from Schedule 8 or Form RC381, whichever applies. Claim on line 421 of your return the amount from Schedule 8 or Form RC381, whichever applies.

If you were a resident of Quebec on December 31, 2016, claim on line 222 and on line 310 of Schedule 1, in dollars and cents, the amount from Schedule 8 or Form RC381, whichever applies. Line 421 does not apply to you.

Your CPP or QPP contribution must be prorated in certain situations, such as if in 2016:

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