6)
• Poll Taxes
Literacy Tests
. the "Grandfather Clause"
o the White Primary"
A)
What do these terms have in common? Hila dok2
They were all prevented from being enforced to do the efforts of Radical
Republicans.
They were all enacted as part of President Theodore Roosevelt's "Square Deal"
program
They were all used to ensure that African-Americans were allowed to vote in
Southern states in the late 1800s.
They were all used to disfranchise African-Americans in the South in the years
following the Civil War and Reconstruction.

The authors of the paper "fudging the numbers: distributing chocolate influences student evaluations of an undergraduate course"† carried out a study to see if events unrelated to an undergraduate course could affect student evaluations. students enrolled in statistics courses taught by the same instructor participated in the study. all students attended the same lectures and one of six discussion sections that met once a week. at the end of the course, the researchers chose three of the discussion sections to be the "chocolate group." students in these three sections were offered chocolate prior to having them fill out course evaluations. students in the other three sections were not offered chocolate. the researchers concluded that "overall, students offered chocolate gave more positive evaluations than students not offered chocolate." indicate whether the study is an observational study or an experiment. give a brief explanation for your choice.