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    Suppose that three book publishers were interested in the number of fiction paperbacks adult consumers purchase per month. Each publisher conducted a survey. In the survey, adult consumers were asked the number of fiction paperbacks they had purchased the previous month. The results are as follows:

    Find the relative frequencies for each survey. Write them in the charts.Using either a graphing calculator, computer, or by hand, use the frequency column to construct a histogram for each publisher's survey. For Publishers A and B, make bar widths of one. For Publisher C, make bar widths of two.In complete sentences, give two reasons why the graphs for Publishers A and B are not identical.Would you have expected the graph for Publisher C to look like the other two graphs? Why or why not?Make new histograms for Publisher A and Publisher B. This time, make bar widths of two.Now, compare the graph for Publisher C to the new graphs for Publishers A and B. Are the graphs more similar or more different? Explain your answer.

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Questions & Answers

if x is a continuous random variable and` c` is a constant then p(x=c)
Neha Reply
the length of human pregnancies from conception to birth approximates a normal distribution with a mean of 266days and a standard deviation of 16days.(i) what length of time marks the shortest 10%of all pregnancies ?
27.6390625 days
how can I solve a Hypothetic problem that provide sample data such as 45,3_,45,28,17 ect...what is the first step
Where can we check the answers to the review questions?
Kathleen Reply
Calculate theta if one minus theta times hundred percent is equal to ninety five cI
Sipelele Reply
what's poison distribution
Abdulhakim Reply
what's poissan distribution?
It's Poisson. It's a discrete probability distribution that is used to find the probability of an event x happening within a fixed interval of time. E. g. If a shop sells an average of 5 goods on Saturdays, what is the probability that the shop will sell 7 goods on a particular Saturday.
which kind of work do statistics do
Adamu Reply
how so I know the right answers
Emefa Reply
a. l. bowley definition
Monster Reply
what are events in statistics
Animashaun Reply
Like a roll of a dice! Or a coin toss. Or a gender reveal party!
what is statistics
ADAM Reply
can anyone explain it better for me
the science of statistics deal with the collection, analysis, interpretation and presentation of data
I am also studying statistics
Correlation regression, explain it to me in short.
correlation is used to find relationship between two and dependent ), regression used for predicting the future by analyzing past data
correlation is used to find relationship between two variables
dependent and independent eg. profit is dependent on sales
Statistics has been designed as the mathematical science of making decisions and drawing conclusions from data in situations of uncertainty. It includes the designings of experiments, collection, organization, summarization snd interpretation of numerical data.
excellent Aliya..... good...Arun....
The degree or strength of relationship(interdependence) between the variables is called "correlation ". Examples: heights and weights of children, ages of husbands and ages of wives at the time of their marriages, marks of students in mathematics and in statistics.
The dependence of one variable (dependent variable) one one or more independent variables ( independent variables) is called "regression ".
simply regression and multiple regression are the types of regression.
I need help with a math problem
9. The scatterplot below relates wine consumption (in liters of alcohol from wine per person per year) and death rate from heart disease (in deaths per 100,000 people) for 19 developed countries.
For questions e. and f. use the equation of the Least-Square Regression LSR line is: y = −22.97x+260.56 e. Circle the correct choice and fill in the blank in the following statement: As wine consumption increases by 1 liter of alcohol per person per year, the predicted death
Rate from heart disease increases/decreases by ______deaths per ________people.
is a scientific study of collection analysis interpretation and also presenting it by researchers.
frequency distribution
Wasim Reply
noun STATISTICS a mathematical function showing the number of instances in which a variable takes each of its possible values.
Common language-- taking a bunch of information and seeing if it is related or not to other info
Does standard deviation have measuring unit?
yes, the measuring unit of the data you are looking at, for example centimetres for height.
is that easy to plot a graph between three axis?
yes we can but we do not have that much effective tools. If the graph is normal or less complicated then it is plotted effectively otherwise it will give you nightmare.
whats the difference between discrete and contineous data
Discrete variables are variables that can assume finite number of values. Continuous variables are variables that can assume infinite number of values
i will give you an example: {0,4,84} it contains discrete or limited values like it can also contain boolean values{true,false} or {0,1} and continuous are like {1,2,3,4,5......} , {0,0.1,0.2,0.3,0.4...........}
a no. of values which are countable are called discrete variables on the other hand, a no. of values which are not countable are called continuous variables
Yup, I would like to support Mr.Umair's argument by saying that it can only apply if we have a 3-D graph,otherwise a plane graph will not apply at all
Aliya and Mike thnks to both of you ❤❤
what's variance
Sulaiman Reply
what's case control study?
* Consider a study of 300 males aged 18 years or higher conducted in a city called D. The study indicates that there are 10% smokers. Answer the following questions: What is the sample? What is the population? What is the variable of interest? What is the scale of measurement used for the variab
Consider a study of 300 males aged 18 years or higher conducted in a city called D. The study indicates that there are 10% smokers. Answer the following questions: What is the sample? What is the population? What is the variable of interest? What is the scale of measurement used for the variabl
what is covariance
Florence Reply
In probability theory and statistics, covariance is a measure of the joint variability of two random variables.[1] If the greater values of one variable mainly correspond with the greater values of the other variable, and the same holds for the lesser values, (i.e., the variables tend to show simila
Economics department, faculty of social sciences, NOUN. You are required to calculate: the covariance and State whether the covariance is positive or negative. (11½ marks) Observation E D 1 15 17.24 2 16 15.00 3 8 14.91 4 6 4.50 5 15 18.00 6 12 6.29 7 12 19.23 8 18 18.69 9 12 7.21 10 20 4
In probability theory and statistics, covariance is a measure of the joint variability of two random variables.
what is the purpose of statistics and why it is important that statistics to be a solo and one complete field?
Edu-info Reply
to organize,analyze and interpret information in order to make decision
what is noun?
Katama Reply
so simple. the name of any person,place or thing.
Using the Chi-square test, two coins were flipped a hundred times. What will be the chances of getting a head and getting a tale? Given observed values is 62 heads and 38 tails. Expected value is 50 heads, 50 tails. Is the difference due to chance or a significant error? a. Draw your hypothesis
DokBads Reply

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