Learning Materials
Features
Discover
Chapter 1: Q 70. (page 49)
One of the following scores was omitted from the stem plot below:
The missing number is
The correct option is (d)
Over 30 million students worldwide already upgrade their learning with 91影视!
All the tools & learning materials you need for study success - in one app.
Get started for free
You are interested in how much time students spend on the Internet each day. Here are data on the time spent on the Internet (in minutes) for a particular day reported by a random sample of 30 students at a large high school
(a) Construct a histogram of these data. (b) Are there any outliers? Justify your answer. (c) Would it be better to use the mean and standard deviation or the median and )12 to describe the center and spread of this distribution? Why?
El Ni帽o and the monsoon It appears that El Ni帽o, the periodic warming of the Pacific Ocean west of South America, affects the monsoon rains that are essential for agriculture in India. Here are the monsoon rains (in millimeters) for the strong El Ni帽o years between and
(a) To make a stem plot of these rainfall amounts, round the data to the nearest 10, so that stems are hundreds of millimeters and leaves are tens of millimeters. Make two stem plots, with and without splitting
the stems. Which plot do you prefer?
(b) Describe the shape, center, and spread of the distribution.
(c) The average monsoon rainfall for all years from to is about millimeters. What effect does El Ni帽o appear to have on monsoon rains?
Buying music online Young people are more likely than older folk to buy music online. Here are the percent's of people in several age groups who bought music online in :
(a) Explain why it is not correct to use a pie chart to display these data.
(b) Make a bar graph of the data. Be sure to label your axes and title your graph.
Population pyramids A population pyramid is a helpful graph for examining the distribution of a country鈥檚 population. Here is a population pyramid for Vietnam in the year . Describe what the graph tells you about Vietnam鈥檚 population that year. Be specific.
Here are the amounts of money (cents) in coins carried by 10 students in a statistics class: To make a stemplot of these data, you would use stems
(a)
(b)
(c)
(d)
(e) None of these.
What do you think about this solution?
We value your feedback to improve our textbook solutions.
Explanations 
Textbooks 
Flashcards 
91影视 AI 
Notes 
Study Plans 
Study Sets 
Find a degree 
Magazine