# 2.2 Histograms, frequency polygons, and time series graphs  (Page 8/15)

 Page 8 / 15
• Card 8 / 15:
Often, cruise ships conduct all on-board transactions, with the exception of gambling, on a cashless basis. At the end of the cruise, guests pay one bill that covers all onboard transactions. Suppose that 60 single travelers and 70 couples were surveyed as to their on-board bills for a seven-day cruise from Los Angeles to the Mexican Riviera. Following is a summary of the bills for each group.

Fill in the relative frequency for each group.Construct a histogram for the singles group. Scale the x -axis by \$50 widths. Use relative frequency on the y -axis.Construct a histogram for the couples group. Scale the x -axis by \$50 widths. Use relative frequency on the y -axis.Compare the two graphs: List two similarities between the graphs. List two differences between the graphs. Overall, are the graphs more similar or different?Construct a new graph for the couples by hand. Since each couple is paying for two individuals, instead of scaling the x -axis by \$50, scale it by \$100. Use relative frequency on the y -axis.Compare the graph for the singles with the new graph for the couples: List two similarities between the graphs. Overall, are the graphs more similar or different?How did scaling the couples graph differently change the way you compared it to the singles graph?Based on the graphs, do you think that individuals spend the same amount, more or less, as singles as they do person by person as a couple? Explain why in one or two complete sentences.

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how do we know to set null hypothesis
This is Statistic information
Thank average daily sales of a shopkeeper is Rs 200 with a standard deviation Rs 40 for how many days in a leap years his sales are exacted to be worth 1. less than Rs 150 and 2. over Rs 300 ?
what is the probability of at least one in "H"in three tosses of coin?
150%
Andrew
Sorry... 1-(.5^3)=7/8
Andrew
but how?
aneeza
1-(7/8)=1/8 total 8 out comes will appear in that "H" will appear in 7 times that's way
Dillu
sorry ... 1- (probability of getting no heads)=1-(1/8)=7/8
Dillu
HHH.HHT.HTH.THH.HHT.TTH.HTT=7 probability will 7/8
Atul
1-(3C0)(1/2)^3
Chitran
do you think that concurrent method of correlation describe any realtionship between supply and index in data given. supply 112,125,126,118,121,12 price 106,102,102,104,98
X 77 54 27 52 14 35 90 25 Y 35 38 60 40 35 56 34 50
Given the distribution X ~ U (2, 8)
minutes to drive from her suburban home to her midtown office.
Bilal
Define suitable populations from which the following samples are selected Persons in 200 homes are called by telephone in the city of Richmond & asked to name the candidate that they favor for election to the school board. On 5 different occasions it took a lawyer 21, 26, 24, 22 & 21 minutes to
Bilal
Define suitable populations from which the following samples are selected Persons in 200 homes are called by telephone in the city of Richmond & asked to name the candidate that they favor for election to the school board.
Bilal
first one is discrete population with more than two options so it should be multinomial population in second question variable is time so it's a continuous dist, and time is normally distributed so it is normal
fitting of regression equation
how to solve exercise to find difference between HoandHa
Give the info....
Andrew
What is Sampling Techniques?
What is Sampling frame
Goodness
what is stratified Sampling
Goodness
This Sampling technique uses randomization to make sure that every element of the population gets an equal chance to be part of the selected sample. It’s alternatively known as random sampling.
Biswajit
When we take a sample from a population and use a methods for sampling, that mathos are known as sampling technique.
Zahir
why we use distribution in statstics?
Biswajit
Sampling frame is the overall list of population, from which we take sample.
Zahir
The distribution of a statistical data set is a listing or function showing all the possible values (or intervals) of the data and how often they occur.
Zahir
what is statistics
lokesh
Goodness, what's your field of study?
Afrifa
Thanks you
Shakeel
fs>2fm
Teja
sampling techniques are used to convert analog signal into discrete forms which means encode
Teja
Given the distribution X ~ U (2, 8)
KATHY
enumerate main sources of errors in statistics and effects
Bilal
when we divide heterogeneous population into homogeneous sun groups and sample it we called it stratified sampling
Keshav
**sub
Keshav
what are heterogeneous and homogeneous population
helen
Principles of research data
Define statistical distribution of data set?
Sodium
a car cost 28000. it will depreciate at 16% per year. how much will it be worth in 5years
5600?
Ashish
11,710
John
28000x(1-0.16)^5 = 11,709.9343872
Arsenio
5 600
Dumisani
5600
Joe
it's actually 11.7k.... 28k×(1-(16/100))^5
Ashish
11710
Fazil
Yap, its actually 11,7k but quick question, on the number of years, why do we have to use the exponent/ saying to the power 5? I know it's the number of years but what is the significance of that assignment operater?
Dumisani
can u please show ur workings
helen
11.71k
bob
what is the NOMINAL, ORDINAL, INTERVAL AND RATIO SCALE OF MEASUREMENT
norminal scale are scale variable whose observation are merely name and can be group into distinct categories....
bello
ordinal scale these are scale variable whose observation are ranked in order of importance or degree.
bello
interval scale these variable in which the distance or interval between two measurements can be observed.
bello
what is complementary event?
how can I calculate the class mark
given the distribution x ~ u (2, 8) state the type of distribution and draw its graph
KATHY
it's a uniform distribution f(x)= 1/b-a here b=8 and a = 2 here graph is like rectangle with base from 2 to 8 and height on both point will be 1/6