Lab04 Problems

[Sean-In-The-Library]

I'm just not getting what I need to do with Lab 4 - between the stats problem and plugging it into R. I feel like if I saw a video where someone explained a similar problem with a different data set in R (and walked me through it) I could replicate it but right now I'm just plugging in random things and getting errors.

Is anyone having a similar experience or am I uniquely dumb? Has anyone found a useful tutorial or website outside of the class texts that made it "click" for them?

[Mkulbida]

I am having the exact same problems Sean...more so with trying to work out how to do the math than with using R. The lecture notes aren't really helpful since they only seem to provide the formulas and don't show how to do the problems using a real data set, so it is hard for me to grasp. I have been scouring Youtube for the last few weeks trying to find anything to explain it but haven't had any luck.

[babsr]

Same here. I am completely lost. Unfortunately with my work schedule I don't have the time to do any homework until Friday nights. I need serious help with this. I struggle mightily with all of the formulas without any actual video walk throughs on how to do things. Reading math formulas does not work for me with out actual walk through with video and practice problems.

[ronthebassman]

I'm also having a problem getting the Question 1 Part 1 table to load

EDIT: getting this for part 2:

Error in .stargazer.wrap(..., type = type, title = title, style = style, : object 'm.auxiliary' not found

[Sean-In-The-Library]

Same here. I am completely lost. Unfortunately with my work schedule I don't have the time to do any homework until Friday nights. I need serious help with this. I struggle mightily with all of the formulas without any actual video walk throughs on how to do things. Reading math formulas does not work for me with out actual walk through with video and practice problems.

This makes me feel a lot better. Even a short video of implementing some of this in R (even with a different data set) would be hugely beneficial to me. Maybe I'm a visual learner?

[Sean-In-The-Library]

I'm also having a problem getting the Question 1 Part 1 table to load

EDIT: getting this for part 2:

Error in .stargazer.wrap(..., type = type, title = title, style = style, : object 'm.auxiliary' not found

That's also where I got stuck. I couldn't figure out my equation for the m.auxiliary variable and (even when I did) I couldn't figure out how to check my work to make sure it's right. I guess do the equation by hand in Excel or something?

[Sean-In-The-Library]

If you're having an issue with the statistics portion, I found this Aussie guy who gives pretty clear videos about linear regression that seemed to speak to me: https://www.youtube.com/playlist?list=PLTNMv857s9WUI1Nz4SssXDKAELESXz-bi

[itsapara]

For this part of the problem, you should review the table that is given and just assign the corresponding value to ,m.auxiliary. This is a simple number that is shown in the table. If you have trouble finding this, you can still produce/knit the file by setting eval=FALSE for this portion ( R chunk), as we explained in Thursday's chat On Saturday, February 8, 2020, 10:12:33 AM CST, Sean H. notifications@github.com wrote:

I'm also having a problem getting the Question 1 Part 1 table to load

EDIT: getting this for part 2:

Error in .stargazer.wrap(..., type = type, title = title, style = style, : object 'm.auxiliary' not found

That's also where I got stuck. I couldn't figure out my equation for the m.auxiliary variable and (even when I did) I couldn't figure out how to check my work to make sure it's right. I guess do the equation by hand in Excel or something?

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[itsapara]

Sean, Here is the recording from our Thursday's meeting: Topic: Irene Tsapara's Personal Meeting RoomDate:Feb 6,2020 6:58 PM Central Time (US and Canada) Recording-1(81 MB)https://asu.zoom.us/rec/play/uZIpJO35-Dk3H4bE4QSDBaVxW9TvfK2sh3AY_fMJzkq3BXcFYFSkYuYTaus6McT8jmrHdvKuG9t7ct3h Please note that the recordings are available in cloud within 1-24 hours after the meeting. On Saturday, February 8, 2020, 10:11:29 AM CST, Sean H. notifications@github.com wrote:

Same here. I am completely lost. Unfortunately with my work schedule I don't have the time to do any homework until Friday nights. I need serious help with this. I struggle mightily with all of the formulas without any actual video walk throughs on how to do things. Reading math formulas does not work for me with out actual walk through with video and practice problems.

This makes me feel a lot better. Even a short video of implementing some of this in R (even with a different data set) would be hugely beneficial to me. Maybe I'm a visual learner?

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[itsapara]

What exactly is the error you are receiving? On Friday, February 7, 2020, 09:29:38 PM CST, ronthebassman notifications@github.com wrote:

I'm also having a problem getting the Question 1 Part 1 table to load

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[itsapara]

Please review the video recordings from Thursday. Note that there are no specific formulas/commands you need to run other than assignment of values in the given variables of the template that can be found directly from the Rmd Template On Friday, February 7, 2020, 09:28:50 PM CST, Babs notifications@github.com wrote:

Same here. I am completely lost. Unfortunately with my work schedule I don't have the time to do any homework until Friday nights. I need serious help with this. I struggle mightily with all of the formulas without any actual video walk throughs on how to do things. Reading math formulas does not work for me with out actual walk through with video and practice problems.

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[Sean-In-The-Library]

Sean, Here is the recording from our Thursday's meeting: Topic: Irene Tsapara's Personal Meeting RoomDate:Feb 6,2020 6:58 PM Central Time (US and Canada) Recording-1(81 MB)https://asu.zoom.us/rec/play/uZIpJO35-Dk3H4bE4QSDBaVxW9TvfK2sh3AY_fMJzkq3BXcFYFSkYuYTaus6McT8jmrHdvKuG9t7ct3h Please note that the recordings are available in cloud within 1-24 hours after the meeting. On Saturday, February 8, 2020, 10:11:29 AM CST, Sean H. notifications@github.com wrote: Same here. I am completely lost. Unfortunately with my work schedule I don't have the time to do any homework until Friday nights. I need serious help with this. I struggle mightily with all of the formulas without any actual video walk throughs on how to do things. Reading math formulas does not work for me with out actual walk through with video and practice problems. This makes me feel a lot better. Even a short video of implementing some of this in R (even with a different data set) would be hugely beneficial to me. Maybe I'm a visual learner? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.

OK thank you. For some reason, I hadn't been able to find this - although I saw the previous recording from the Class Size/Test/etc. lab. Not sure what I'm doing wrong here but I appreciate the new video.

[lecy]

Hi All -

I know that some of you were having trouble finding the links to videos. Hopefully the examples that Prof. Tsapara provided addressed most of your questions?

A quick reminder on using discussion boards effectively, because I think this cohort is under-utilizing this resources.

(1) If you need clarification about a question, are stuck on code, or don't quite understand a formula those are perfect questions to post on the discussion board. You will generally get a quick response so you don't have to wait for a review session, and someone else in the class might have had the same question.

EXAMPLES FROM LAST TERM

(2) Questions like, "I am stuck on Lab 04" are really hard to answer. Please try to be as specific as possible. For example, "I can't get my code to run for problem 3, here is what I am trying." Or, "I don't understand the example in Lecture 05 on slide 32. Can anyone help?" We can answer these types of questions. We can't answer a general, I'm stuck on the material this week, type of question without being specific about where you are stuck.

(3) If you feel like more examples would be helpful feel free to request a "code-through" (for examples of how to implement R code) or a worked-through sample problem. Just create a new discussion tab and ask for a concrete example of a specific problem. We are happy to generate this content.

These asynchronous online courses are challenging because you are not all in a classroom together, so you don't have the immediate feedback of participating in a lecture then asking questions exactly when they arise. We have students from six time zones (including international) and people working full-time, so it is impossible to schedule sessions that work for everyone.

From the instructor perspective it can be hard to anticipate student questions. One semester student might get stuck on topic A and do great on topic B, and the next semester it is the opposite. Instead of trying to anticipate every questions and overloading you with material, you will find it is more efficient to read through lectures, start early on labs, then figure out where you are stuck and post some questions early in the week. Even if only a couple of students are doing this, the rest benefit from the current material on discussion boards and the labs will go smoother for everyone.

The goal is for you to be challenged but not frustrated. If you feel like you are too far out of your comfort zone please reach out for office hours!

Jesse

[lecy]

@Mkulbida Were you able to find an example that was helpful?

The lecture notes aren't really helpful since they only seem to provide the formulas and don't show how to do the problems using a real data set, so it is hard for me to grasp.

You don't mention a specific formula or problem here:

I have been scouring Youtube for the last few weeks trying to find anything to explain it but haven't had any luck.

If there is one that would be helpful let us know.

[lecy]

@ronthebassman Were you able to get the code running for Part 2?

Run the auxiliary regression to estimate α1.

Calculate the bias using the omitted variable bias equation and show your math. You can check your results by comparing your answer to bias calculation from Part 1.

m.auxiliary <- # your model here

stargazer( m.auxiliary,  
           type = "html", digits=2,
           dep.var.caption = "DV: PSS",
           omit.stat = c("rsq","f","ser"),
           notes.label = "Standard errors in parentheses")

a1 <- 
B2 <- 
bias <- 
bias

[lecy]

@babsr Give us a couple of examples of things you are getting stuck on and it will help figure out how to create some helpful demonstrations, especially to make sure things are clear before the final exam.

I struggle mightily with all of the formulas without any actual video walk throughs on how to do things. Reading math formulas does not work for me with out actual walk through with video and practice problems.