U10 Stats Quiz

Michael Jordan runs a basketball camp. A group of randomly selected camp participants were asked to give their shirt size. The table below shows the results of the survey. There are 308 camp participants this year. Based on the data, what is the most reasonable estimate for the number of this year's camp participants who will need a medium shirt?

• 1232

• 15

• 4.5

• 77

A couple uses a random number generator to  try to see their chances of having a girl or a boy. Which type of study would be the most practical way to obtain this information?

• survey

• simulation

• experiment

• observation

You randomly select certain plants in your garden and give them a new fertilizer.  You record the height of each plant. Which type of study would be the most practical to obtain this information.

• observation

• experiment

• simulation

• survey

A playground company watches kids on a playground and notes how many students play on the jungle gym. Which study represents how they are collecting their data?

• observation

• experiment

• survey

• simulation

From a class containing 12 girls and 10 boys, three students are to be selected to serve on a school advisory panel. Which is the best sampling method, among these four, if you want the school panel to represent a fair and representative view of the opinions of your class?

• Select the first three names on the class roll.

• Select the first three students who volunteer

• Place the names of the 22 students in a hat, mix them thoroughly, and select three names from the mix

• Select the first three students who show up for class tomorrow

A student wants to determine the most liked professor at her college. Which type of study would be the most practical to obtain this information?

• simulation

• observation

• experiment

• survey

A reporter wants to know the percentage of voters in the state who support building a new highway. What is the reporter’s population?

• The number of people who live in the state

• All eligible voters in the state

• All voters over 25 years old in the state

• The people who were interviewed in the state

A toy manufacturer wants to find out what defects customers have found with their new product. They decide they want to survey 10,000 customers. Which method would perform a simple random sample?

• Obtaining a list and calling every 5th customer.

• Putting every customers number in a hat drawing 10,000 at random.

• Standing in line at the customer service line at Toy’s – R – Us and asking every other person.

• Calling every person who has registered their new products.

A local community college conducts a survey to determine the percent of high school seniors in the community who want to attend the college in the fall term following their graduation. Which of these samples will provide the most accurate results?

• Every 15th high school senior from each high school roster

• Every high school senior who is taking AP Statistics

• Every 15th student on the roster attending the fall term at the college

• Every senior attending the graduation ceremony

A research institute is studying the effects of exercise on memory power among healthy adults in their 60s. Which scenario describes an observational study?

• Find 100 volunteers, 50 of whom exercise three days a week, and 50 of whom do not exercise. Give the volunteers memory tests at the beginning, middle and end of the study; analyze the data’ and draw conclusions

• Find 100 volunteers who regularly exercise. Assign 50 of them to stop exercising for the duration of the study. Give the volunteers memory tests at the beginning, middle, and end of the study; analyze the data; and draw conclusions.

• Find 100 volunteers who do not exercise. Assign 50 of them to start exercising three days a week. Give the volunteers memory tests at the beginning, middle, and end of the study; analyze the data; and draw conclusions.

• Find 100 volunteers who do not exercise. Assign all of the volunteers to start exercising three days a week. Give the volunteers memory tests at the beginning, middle and end of the study; analyze the data; and draw conclusions.