Fix a few small typos

ngoubou · Jul 12, 2019 · a69cb4c · a69cb4c
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diff --git a/ch_intro_to_data/TeX/data_basics.tex b/ch_intro_to_data/TeX/data_basics.tex
@@ -215,7 +215,7 @@
 % 12
 
 \eoce{\qt{UN Votes\label{unvotes}}
-The visualization below shows voting patterns 
+The visualization below shows voting patterns in 
 the United States, Canada, and Mexico in the United Nations General Assembly 
 on a variety of issues. Specifically, for a given year between 1946 and 2015, 
 it displays the percentage of roll calls in which the country voted yes for 

diff --git a/ch_intro_to_data/TeX/sampling_principles_and_strategies.tex b/ch_intro_to_data/TeX/sampling_principles_and_strategies.tex
@@ -101,7 +101,8 @@
 estimate the percentage of videos on YouTube that are cat videos. It is 
 impossible for you to watch all videos on YouTube so you use a random video 
 picker to select 1000 videos for you. You find that 2\% of these videos are 
-cat videos.Determine which of the following is an observation, a variable, 
+cat videos.
+Determine which of the following is an observation, a variable, 
 a sample statistic (value calculated based on the observed sample), 
 or a population parameter.
 \begin{parts}

diff --git a/ch_regr_simple_linear/TeX/ch_regr_simple_linear.tex b/ch_regr_simple_linear/TeX/ch_regr_simple_linear.tex
@@ -132,7 +132,7 @@ \subsection{Fitting a line to data}
 Figure~\ref{notGoodAtAllForALinearModel}
 where there is a very clear relationship between the variables
 even though the trend is not linear.
-We will discuss \indexthis{nonlinear} trends in this chapter
+We discuss \index{nonlinear}nonlinear trends in this chapter
 and the next, but details of fitting nonlinear models
 are saved for a later course.
 
@@ -898,7 +898,7 @@ \subsection{Finding the least squares line}
     in Figure~\ref{rOutputForIncomeAidLSRLine}.
     Can you guess what they represent?
     (If you have not reviewed any inference chapter yet,
-    skip this Guided Practice exercise.)}
+    skip this example.)}
   We'll describe the meaning of the columns using the
   second row, which corresponds to~$\beta_1$.
   The first column provides the point estimate for $\beta_1$,

diff --git a/main.pdf b/main.pdf