Unit 7: Scatter Plots and Two-Way Tables

1. The table shows number of people signed up to sing on a karaoke stage on each night of the week. Which scatter plot best represents the table?

2. Consider the scatter plot. Which statement best describes the data set?

3. Which statement best describes the association shown in the scatter plot?

4. Which shows the most accurate line of best fit?

5. The graph shows a line of best fit for data collected on the number of bakery items left in the bakery over the course of one day’s sales.

The equation for the line of best fit is $$𝑦=−10𝑥+100$$ . What does the y-intercept represent?

6. The average baby growth of newborn babies each month after birth is shown in the scatter plot below. The equation for the line of best fit is $$𝑦=\frac{5}{4}𝑥+21$$ . Based on the line of best fit, what length might be expected if a baby is 7 months old?

7. Fifty students were asked if they played spring sports and/or fall sports. The data is listed below. Which two-way table best represents the data given?

7 students do not play either sports

21 students play both sports

17 students play only fall sports

5 students play only spring sports

8. The local sheriff’s station has gathered data on drivers who text and drive and whether or not they have accidents. They presented their data in the table below. Which tendency does the table suggest?

9. The two-way table below shows the raw data of a recent survey that compared coffee and tea drinkers.

Based on the data, what percent of people surveyed drink both tea and coffee?

10. The two-way table below shows the raw data of a recent survey that compared coffee and tea drinkers.

Based on the data, what percent of tea drinkers do not also drink coffee?