Statistics problem: bar graphs?
2)A 2012 survey examined cell phone ownership by US adults. The results of the survey are shown in Table 2.
(a)Make a relative frequency table of the data. Give results to three decimal places.
(b)What percent of the survey respondents do not own a cell phone? What percent own a cell phone but not a smartphone? What percent own a smartphone?
(c)Construct an appropriate graph for displaying the data below.
Frequencies in cell phone ownership
Cell Phone Owned Frequency
Android smartphone 458
iPhone smartphone 437
Blackberry smartphone 141
Cell phone not smartphone 924
No cell phone 293
Total 2253
I figured out how to do the bar graph, I'm just not sure about the math.
If your course includes: Descriptive & One-Sample Inferential Statistics then I can recommend a very easy to understand textbook:
Data Analysis: Introduction to Statistics https://www.createspace.com/4487861
This text book will be invaluable to any student that is considering studying Statistics at University, College or High School.
The book contains both Descriptive and 1-sample Inferential Statistics and is crammed with easy to understand examples, solved problems, supplementary questions and trial exam questions.
The book also includes 5 complete trial exams with very detailed solutions. The trial exams contain a grading system that allows students to see what level they are at. The book encourages students to work through the many questions in every topic thereby reinforcing student's understanding of basic concepts.
Available from https://www.createspace.com/4487861.
CONTENTS
TOPIC 1 Data and Data Sets
TOPIC 2 Displaying Data
TOPIC 3 Numerical Summaries
MEAN
MEDIAN
MODE
RANGE
STANDARD DEVIATION
VARIANCE
TOPIC 4 Relationships between variables
TOPIC 5 Introduction to Probability
TOPIC 6 Probability Distributions
BINOMIAL
POISSON
NORMAL
TOPIC 7 Sampling & Sampling Distributions
TOPIC 8 Interval Estimation (1-sample)
TOPIC 9 Hypothesis Testing (1-sample)
TOPIC 10 Regression Analysis (linear)
TOPIC 11 Time-Series and Index Numbers
TOPIC 12 EXAM REVISION
GLOSSARY
- What happens when you press the reset statistics? I have an iPhone 4S and I want more space. It says in cellular usage i used 13.9gb for calls received and used 2.5gb for sent texts and calls. What happens when I reset the statistics?
- What does reset statistics under cellular usage mean for the iphone 4? I've been trying to clear space on my phone because I have NO space on my phone. I have like 300 pictures and a couple videos on there… But I never really delete my messages or calling history… So is that what "resetting statistics" means? What's the best way to make space on your iphone 4?
- What does reset statistics mean? On iphone 5s? I have like 50.1 gb on my phone. I saw reset statistics on the botton(cellular>go to the botto) what does it mean? And does it lower my data and lower my bill?
- What does 'Reset Statistics' mean? On iPhone 5? Basically, need to know what it is. Found on settings>mobile and it's at the bottom written in red. When I click it, it says 'do you want to reset your usage statistics' But what does this do exactly? Will everything like my photos etc and contacts be wiped off the phone or?