Chapter 1 Kahoot

Indicate the answer choice that best completes the statement or answers the question. 1. The table below shows the results of the New Hampshire Republican Presidential Primary on January 10, 2012.
Which of the following lists of graphs are all appropriate ways of presenting these data?

• bar graph, pie chart, boxplot

• bar graph, boxplot

• bar graph, pie chart

• bar graph only

• pie chart only

Mr. Swartzentruber selects a random sample of 100 students in grades 10 through 12 and asks their year in school and whether they were involved in interscholastic sports, intramural sports, or no sports. The results are summarized in the segmented bar graph below. Based on this graph, which of the following statements is true?

• More seniors are involved in interscholastic sports than sophomores.

• There is no association between year in school and whether students are involved in sports.

• There were more seniors in the sample than juniors.

• Juniors have the highest percentage participation in intramurals.

• Less than half the seniors are involved in either interscholastic or intramural sports.

Tags

CCSS.8.SP.A.4

A company manufactures special plastic containers that hold a specified volume of hazardous material. Some containers do not meet specifications because they are either too small or too large. Are there differences between the sizes of containers produced by the daylight (8am), evening (4pm), and midnight shifts? Here is a mosaic plot of the results after inspecting 1500 randomly selected containers.

• There were many more containers that were within specifications than outside of the specifications.

• Knowing whether a container was too small, within specifications, or too large is helpful for predicting what shift produced it.

• Containers that are too small were most commonly produced by the midnight shift.

• Containers that are too large were most commonly produced by the 8:00 AM shift.

• Knowing that a container is within specifications does not help us predict what shift produced it.

Tags

CCSS.8.SP.A.4

The histogram below shows the length (in minutes) of 140 songs recorded by the band, Wilco. Which of the following descriptions best fits this distribution?

• skewed to the right, centered at about 8, with several high outliers

• skewed to the left, centered at about 8, with several high outliers

• skewed to the right, centered at about 4.5, with several high outliers

• skewed to the left, centered at about 4.5, with several high outliers

• skewed to the left, centered at about 3.5, with several high outliers

Below is a histogram of the heights of gold-medal-winning high jumps in the Olympic Games since 1896. Which of the following statements is supported by this histogram?

• The median jump is between 75 and 80 inches.

• The median jump is between 80 and 85 inches.

• The smallest jump must be below 65 inches.

• The winning jump in the 1976 Olympic Games was 40 inches.

• The mean jump was equal to the median jump.

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

A policeman records the speeds of cars on a certain section of roadway with a radar gun. The histogram below shows the distribution of speeds for 251 cars. If the value, 35 mph, was actually 29 mph, how would the mean and standard deviation change?

• the mean would increase and the standard deviation would increase

• the mean would decrease and the standard deviation would decrease

• the mean would stay nearly the same and the standard deviation would increase

• the mean would stay nearly the same and the standard deviation would decrease

• the mean would stay nearly the same and the standard deviation would stay nearly the same

A consumer group surveyed the prices for a certain item in five different stores, and reported the average price as $15. We visited four of the five stores, and found the prices to be $10, $15, $15, and $25. Assuming that the consumer group is correct, what is the price of the item at the store that we did not visit?

• $5

• $10

• 15

• 20

The mean age of four people in a room is 30 years. A new person whose age is 55 years enters the room. What is the mean age of the five people now in the room?

• 30

• 35

• 37.5

• 40

• Cannot be determined from the information given.

Tags

CCSS.6.SP.B.5C

There are three children in a room, ages three, four, and five. If another four-year-old child enters the room, what will happen to the mean age and variance (variance is standard deviation squared)?

• mean age will stay the same but the variance will increase.

• mean age will stay the same but the variance will decrease.

• mean age and variance will stay the same.

• mean age and variance will increase.

• mean age and variance will decrease.

The mean birth weight of a sample of infants born at a certain hospital in the month of April was 128 oz. with a standard deviation of 10.2 oz. Which of the following is a correct interpretation of standard deviation?

• all the infants born in April weighed between 117.8 oz. and 138.2 oz.

• about half the infants born in April weighed between 117.8 oz. and 138.2 oz.

• the difference between the mean weight and the median weight of infants born in April was 10.2 oz.

• the distance between the weight of each infant born in April and the mean weight was, on average, about 10.2 oz.

• the mean weight of infants born in subsequent months is likely to be within 10.2 oz. of the mean weight in April.