Statistics Review

Questions 1 & 2: 
   Part A: Find the mean, median, and mode for each set of data.  
   Part B: Then determine the best measure of center to describe the data.

4

2

Identify the type of sampling method used in each scenario.

Scientists monitored 50 toucans from zoos worldwide and 50 wild toucans to determine which fruit the birds most preferred to eat.
A survey taker asked every forth boy on a middle-school roster what brand of shoes he prefferred to wear
The principal uses a random number generator to select 50 students. Those students were asked how often they ate dessert every month.

random sample
systematic sample
stratefied sample

3

The dot plots below describe the test scores on Mr. Santo's final exam.

Part A: Determine which measure of center you should use to compare the two data sets.
Part B: Use that measure of center to write a valid inference comparing Mr. Santo's second and sixth-period classes.

4

Draw a box-and-whisker plot for the data.

1

Two games are played during a bowling tournament. The box-and-whisker plots show the scores of the bowlers in each game. Identify the valid inference(s).

1

Guillermo surveyed students in the cafeteria about their favorite food. Assume his sample is representative of the entire school. If there are 1425 students in the school, how many would you expect to say burgers or fried chicken are their favorite food?

2

Classify the data as qualitative or quantitative and as univariate or bivariate.

heights of plant seedlings
the speed and altitude of several airplanes
favorite television shows

qualitative
quantitative
univariate
bivariate

2

A public interest group is calling households asking, “Do you support the governor’s plan to provide better, higher paying jobs to hard-working families?” Is the question biased? Explain your answer.

1

Each school's rank going into the tournament is a strong indicator of their likelihood of winning their first game. This can be expressed as y = -5.95x + 101 where x is their rank (out of 16) and y is the percent chance they have of winning their first game.
According to the model, a school ranked #6 has what probability of winning their first game? Round your answer to the nearest percent.

Identify the type of sampling method used in each scenario.

The dot plots below describe the test scores on Mr. Santo's final exam.Part A: Determine which measure of center you should use to compare the two data sets.Part B: Use that measure of center to write a valid inference comparing Mr. Santo's second and sixth-period classes.

Draw a box-and-whisker plot for the data.

Two games are played during a bowling tournament. The box-and-whisker plots show the scores of the bowlers in each game. Identify the valid inference(s).

Guillermo surveyed students in the cafeteria about their favorite food. Assume his sample is representative of the entire school. If there are 1425 students in the school, how many would you expect to say burgers or fried chicken are their favorite food?

Classify the data as qualitative or quantitative and as univariate or bivariate.

A public interest group is calling households asking, “Do you support the governor’s plan to provide better, higher paying jobs to hard-working families?” Is the question biased? Explain your answer.

The dot plots below describe the test scores on Mr. Santo's final exam.

Part A: Determine which measure of center you should use to compare the two data sets.
Part B: Use that measure of center to write a valid inference comparing Mr. Santo's second and sixth-period classes.