Qmd exercises, Chp 1 only (#357)

* Fix section references

* Update pipe, and some other minor things

* Fix response and re-render

* Re-render

Author: mine-cetinkaya-rundel

01-data-hello.qmd

@@ -18,7 +18,7 @@ In this first chapter, we focus on both the properties of data and on the collec
 terms_chp_1 <- c("data")
 ```
 
-## Case study: Using stents to prevent strokes {sec-case-study-stents-strokes}
+## Case study: Using stents to prevent strokes {#sec-case-study-stents-strokes}
 
 In this section we introduce a classic challenge in statistics: evaluating the efficacy of a medical treatment.
 Terms in this section, and indeed much of this chapter, will all be revisited later in the text.
@@ -145,7 +145,7 @@ This study looked at patients with very specific characteristics who volunteered
 In addition, there are many types of stents, and this study only considered the self-expanding Wingspan stent (Boston Scientific).
 However, this study does leave us with an important lesson: we should keep our eyes open for surprises.
 
-## Data basics {sec-data-basics}
+## Data basics {#sec-data-basics}
 
 Effective presentation and description of data is a first step in most analyses.
 This section introduces one structure for organizing data as well as some terminology that will be used throughout this book.
@@ -603,7 +603,7 @@ We will revisit this idea when we discuss experiments later in the book.
 
 \vspace{10mm}
 
-## Chapter review {chp1-review}
+## Chapter review {#sec-chp1-review}
 
 ### Summary
 
@@ -625,7 +625,7 @@ make_terms_table(terms_chp_1)
 
 \clearpage
 
-## Exercises {chp1-exercises}
+## Exercises {#sec-chp1-exercises}
 
 Answers to odd-numbered exercises can be found in [Appendix -@sec-exercise-solutions-01].
 

_freeze/01-data-hello/execute-results/html.json

@@ -10,7 +10,7 @@
 1. \(a) Treatment: $10/43 = 0.23 \rightarrow 23\%$. (b) Control: $2/46 = 0.04 \rightarrow 4\%$. (c) A higher percentage of patients in the treatment group were pain free 24 hours after receiving acupuncture. (d) It is possible that the observed difference between the two group percentages is due to chance. (e) Explanatory: acupuncture or not. Response: if the patient was pain free or not.
 \addtocounter{enumi}{1}
 
-1. \(a) Experiment; researchers are evaluating the effect of fines on parents' behavior related to picking up their children late from daycare. (b) 10 cases: the daycare centers. (c) Number of late pickups (discrete numerical). (d) Week (numerical, discrete), group (categorical, nominal), number of late pickups (numerical discrete), and study period (categorical, ordinal).
+1. \(a) Experiment; researchers are evaluating the effect of fines on parents' behavior related to picking up their children late from daycare. (b) 10 cases: the daycare centers. (c) Number of late pickups (discrete numerical). (d) Week (numerical, discrete), group (categorical, nominal), number of late pickups (numerial, discrete), and study period (categorical, ordinal).
 \addtocounter{enumi}{1}
 
 1. \(a) 344 cases (penguins) are included in the data. (b) There are 4 numerical variables in the data: bill length, bill depth, and flipper length (measured in millimeters) and body mass (measured in grams). They are all continuous. (c) There are 3 categorical variables in the data: species (Adelie, Chinstrap, Gentoo), island (Torgersen, Biscoe, and Dream), and sex (female and male).