From: Nicholas Vincent Date: Tue, 27 Oct 2020 01:56:12 +0000 (-0500) Subject: typo fixes + instructions for submitting csv files X-Git-Url: https://code.communitydata.science/stats_class_2020.git/commitdiff_plain/c13bce81edb9862158e4da1becb092faa0c1acb1 typo fixes + instructions for submitting csv files --- diff --git a/assessment/interactive_assessment.rmd b/assessment/interactive_assessment.rmd index e81b938..a1e3d8c 100644 --- a/assessment/interactive_assessment.rmd +++ b/assessment/interactive_assessment.rmd @@ -134,8 +134,8 @@ zeroToOneRescaler <- function() { } test_vector = c(1,2,3,4,5) -zeroToOneRescaler(test_vector) # Should print c(0, 0.25, 0.5, 0.75, 1.00) +zeroToOneRescaler(test_vector) ``` ```{r R_debug1-solution} @@ -146,8 +146,8 @@ zeroToOneRescaler <- function(x) { } test_vector = c(1,2,3,4,5) -zeroToOneRescaler(test_vector) # Should print c(0, 0.25, 0.5, 0.75, 1.00) +zeroToOneRescaler(test_vector) ``` ```{r R_debug1-response} @@ -283,16 +283,16 @@ quiz( answer("if an effect is causal or not.") ), question("A distribution that is right-skewed has a long tail to the:", - answer("right", correct = TRUE), - answer("left") + answer("right.", correct = TRUE), + answer("left.") ), question("A normal distribution can be characterized with only this many parameters:", - answer("1"), - answer("2", correct = TRUE), - answer("3") + answer("1."), + answer("2.", correct = TRUE), + answer("3.") ), question("When we calculate standard error, we calculate", - answer("using a different formula for every type of variable."), + answer("it using a different formula for every type of variable."), answer("the sample standard error, which is an estimate of the population standard error.", correct = TRUE), answer("whether or not our result is causal.") ), @@ -304,7 +304,7 @@ quiz( question("P values tell us about", answer("the world in which our null hypothesis is true.", correct = TRUE), answer("the world in which our null hypothesis is false."), - answer("the world in which our data describe a causal effect") + answer("the world in which our data describe a causal effect.") ), question("P values are", answer("a conditional probability.", correct = TRUE), @@ -325,10 +325,9 @@ quiz( ```{r StatsConcepts_sampling} quiz( - question("A political scientist is interested in the effect of government type on economic development. -She wants to use a sample of 30 countries evenly represented among the Americas, Europe, -Asia, and Africa to conduct her analysis. What type of study should she use to ensure that -countries are selected from each region of the world? Assume a limitied research budget.", + question("A political scientist is interested in the effect of teaching style type on standardized test performance +She wants to use a sample of 30 classes evenly represented among the Communication, Computer Science, and Business to conduct her analysis. What type of study should she use to ensure that +classes are selected from each region of the world? Assume a limited research budget.", answer("Observational - simple random sample"), answer("Observational - cluster"), answer("Observational - stratifed", correct=TRUE), @@ -537,7 +536,11 @@ $Q_1 - 1.5 \times IQR, \quad Q_3 + 1.5 \times IQR$ ## Answer Report Finally, let's generate a report that summarizes your answers to this evaluation. -Answers are written to a file that looks like this: `question_submission-{CURRENT TIME}.csv`. They're also saved in R Studio's global environment as a variable called `df`. Run the below code chunk to see what `df` looks like. +Answers are written to a file that looks like this: `question_submission-{CURRENT TIME}.csv`. + +Take note of this csv file: this is what you will submit to Canvas. + +They're also saved in R Studio's global environment as a variable called `df`. Run the below code chunk to see what `df` looks like. ```{r report1, exercise=TRUE} df