Making Inferences from Tables

Q1. How many red shirts do you have?

• A) 5 red shirts

• B) 17 red shirts

• C) 40 red shirts

• D) 83 red shirts

A random survey was conducted at an office about the workers favorite office supply. The results are shown in the table below. Based on the information in the table, which inference about favorite office supply of all the workers appears to be valid?

• It is certain that an office worker will NOT choose Tape as their favorite office supply

• It is certain that an office worker will choose Paper as their favorite office supply

• It is more likely that an office worker will choose Pens, Staplers, or Paper Clips over Paper

• More people like Staplers or Paper Clips over Pens/Pencils

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A book store took a random survey of customers about their favorite book genre. The table shows the number of customers who selected each genre. Based on the information in the table, which inference about the favorite genre of all the customers appears to be valid?

• They are certain to select Romance or Young Adult

• They are less likely to select Sci-Fi than Horror, Non-Fiction or History

• They are more likely to select Romance than Sci-Fi, Horror, and History

• They are certain to select any genre other than History

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The results of a random survey about a person's favorite pet is shown in the table. Based on the information in the table, which inference about the favorite pet of the general population appears to be valid?

• It is certain that a person will choose Dog as their favorite pet

• It is less likely a person will choose Dog than Cat or Fish

• It is more likely a person will choose Fish or Bird than Cat

• Dogs are liked more than all other animals combined

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The table shows the results of a survey of 200 people attending a hockey game.
The attendance for the hockey game is about 25,000 visitors each game.  Based on the table, how many people out of 25,000 could be expected to buy a pennant?

• 1,375

• 1,650

• 2,750

• 3,850

What inference can you draw from this survey?

• I can infer that most students in this school like pizza.

• I can infer that very few students like hamburgers.

• I can infer that their favorite is corn dogs.

• I can infer that most students in this school like hamburgers.

There are 400 students at Polly's school. She surveyed a random sample of 80 students to find their favorite hobby. 19 said they like to read. 30 said they like to be with friends. 8 said they like to do crafts. 23 said they like to play sports. Polly infers that doing crafts is the least popular hobby at her school. Refer to the data table. Polly surveys two more samples. Do the results from these samples support the inference made from the first sample?

• Yes, the survey results support the inference that doing crafts is the least popular hobby at Polly's school.

• No, the survey results does not support the inference that doing crafts is the least popular hobby at Polly's school.

The dot plots show how long it took students in Mr. Chauncey's two science classes to finish their science homework last night. Find the means to make an inference about the data.

• The 1st period mean is 35. The 2nd period mean is 38.75. On average, it took students in the 1st period class slightly longer to finish their homework than it did the students in the 2nd period class.

• The 1st period mean is 38.75. The 2nd period mean is 35. On average, it took students in the 1st period class slightly longer to finish their homework than it did the students in the 2nd period class.

• The 1st period mean is 35. The 2nd period mean is 38.75. On average, it took students in the 2nd period class slightly longer to finish their homework than it did the students in the 1st period class.

• The 1st period mean is 38.75. The 2nd period mean is 35. On average, it took students in the 2nd period class slightly longer to finish their homework than it did the students in the 1st period class.

What inference is probably true based on the mean and median of the scores below? Blue Team Averages per quarter: 91%, 88%, 87%, 90% Green Team Averages per quarter: 88%, 85%, 82%, 89%

• The Blue team had slightly higher grades, on average.

• The Green team had slightly higher grades, on average.

• The Blue and Green teams had the exact same scores, on average.

• The Blue team’s scores were twice as great as the Green team’s scores.

If you compare the medians of each data set, who spends more time online?

• Seventh graders

• Eight graders

• Both grades spend an equal amount of time online.

• Impossible to determine form the data sets.