1. A bar graph shows the number of books read by students in three classes. The vertical axis starts at 20 instead of 0. What problem does this create?
2. Two stores sell the same item: Store X sells 105 units and Store Y sells 95 units. A bar graph starts its vertical axis at 90. How many units tall is Store X's bar on this graph?
3. A bar graph displays favorite sports: Soccer (25 students), Basketball (20 students), Tennis (10 students). The vertical axis correctly starts at 0. The bar for Soccer is ___ units taller than the bar for Tennis.
4. Which of the following is NOT a required feature of a valid bar graph?
5. In a bar graph with the vertical axis starting at 60, Candidate A has a bar 9 units tall and Candidate B has a bar 3 units tall. What are their actual vote counts?
6. The data set is $\{2, 6, 4, 2, 6, 2, 4\}$. When constructing a dot plot, how many dots should be stacked above the value $2$? ___
7. In a dot plot of quiz scores, dots are stacked at values $8, 9, 9, 10, 10, 10$. Which value represents the peak (mode) of this data set?
8. A student records hours of TV watched per day: $\{1, 1, 2, 2, 3, 8\}$. Which value is most likely an outlier on the dot plot?
9. A dot plot shows dots at: one dot above $5$, three dots above $6$, three dots above $7$, and one dot above $10$. How many total data points are represented? ___
10. A dot plot of students' siblings shows dots clustered at $0, 1, 2$ with no dots at $3$ and a single dot at $5$. What feature does the empty space at $3$ represent?