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U1D4 Measures of Center and Variability Jan13

Last updated 7 months ago
16 questions
Note from the author:
1

The following table shows data for the 8 longest roller coasters in the world as of 2015.

Which of the following variables is categorical?

1

A market researcher asked a group of men and women to choose their favorite color design from a sample of advertisements. The results are shown in the following table.

Which of the following statements is not supported by the table?

1

Which of the following questions about cars in a school parking lot will allow for the collection of a set of categorical data?

1

The following dotplot shows the scores of 25 people who played an online trivia game.


Which of the following statements is the best description of the distribution of scores?
(You should know each bold vocabulary word. Search for an image of any you do not.)

1

In a standard golf tournament, golfers play 18 holes of golf on each of 4 consecutive days. For each hole, golfers keep track of the number of times they hit the ball (strokes) before the ball goes into the cup. A golfer’s score for the tournament is the total number of strokes needed to complete the tournament. The boxplots below summarize the scores for golfers who competed in tournament 1 and golfers who competed in tournament 2.

Based on the boxplots, which of the following statements must be true?

1

Data were collected on 100 United States coins minted in 2018. Which of the following represents a quantitative variable for the data collected?

1

A car rental agency has two locations in a city. The boxplots below summarize the miles driven for one day of single-day car rentals at each location.

Based on the boxplots, which statement provides the best comparison of the two locations?

1

The following pie chart summarizes the results of a survey given to airlines about the primary reason for flight delays.

Which of the following statements is supported by the pie chart?

1

Which of the following statistics is defined as the 50th percentile?

1

A survey is conducted on the use of Facebook of adults in the United States, where 12,000 adults are surveyed and 9,450 adults answered that they did use Facebook. What is the Sample?

1

Identify the following data set:
…. every single Y-Phone’s maximum volume is measured before being packaged at a manufacturing plant.

1

A traffic cop was stopping every 5th car to check for insurance and license.  What type of sampling method is the cop using?

1

Which type of sampling method is being employed in the following example:
“A study was being conducted after a tsunami.  The researcher was trying to assess the needs of the victims in a single downtown high rise apartment building .  So, she sent a messenger to ask one person on each floor what their needs were to get an idea of what was needed to support the people in the building.”

1

Justin and TJ are servers at a local restaurant.  The table below shows the tips they earned.


Which student has a higher mean tip for the week and by how much?

1

Consider the data set:
4, 5, 5, 5, 6, 6, 8, 9, 11, 12
What would happen to the median if another data point of 17 was added to the data set?

1

Consider the data set represented by the dot plot:


Which word best describes the red data point?