Statistics Assignment Solution - Doc
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Added on 2020-10-05
Statistics Assignment Solution - Doc
Added on 2020-10-05
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Table of ContentsINTRODUCTION...........................................................................................................................1TASK1.............................................................................................................................................1Q1) Calculation of frequencies. .............................................................................................1A)............................................................................................................................................1TASK2.............................................................................................................................................2Q2) .........................................................................................................................................2A)Calculation of sample size..................................................................................................2B) Determination of supply and unit price.............................................................................2C) Coefficient of correlation and relation..............................................................................3D) Relationship between supply and unit price......................................................................3E) Total Supply prediction.....................................................................................................3TASK3.............................................................................................................................................4A) Calculation of ANOVA and presentation in tabular form................................................4B) Advise to Allied using relevant significance ....................................................................4TASK4.............................................................................................................................................4A) Estimated regression equation...........................................................................................4B) Determination of significant model...................................................................................5C) Relationship between sales, price and advertising............................................................6D) Re-estimate the model.......................................................................................................6E) slope coefficient.................................................................................................................8CONCLUSION................................................................................................................................8REFERENCES................................................................................................................................9
INTRODUCTIONStatistical is concerned to the calculation and presentation of large numerical data intabular form. It is basically collection of data, summarizing information that help inunderstanding, drawing conclusion form those data and estimating the present condition orpredicting the future.In this project report different methods of statistic are begin implemented to developunderstanding about complexity of statistics. This includes calculation of cumulative andrelative frequency, and sums based on regression analysis and important calculation on pricedetermination is done in this report.TASK1Q1) Calculation of frequencies.A)Class interval Frequency CFRelativefreq.cumulativerelative freq.% Freq.Distribution 99-905200.25110089-804150.10.757579-706110.30.555569-60250.10.252559-50330.150.1515B)1
From the above analysis histogram that shows the frequency distribution percentage thatindicate the proportion of following class-interval. This chart provide the frequencies of marksreceived by 20 student in a class. This shape of above formed histogram indicating a skeweddistribution to the right side. This movement indicate that there is positive skewed that has morenumber of occurrence in the lower class as compared to upper class. The skewed distribution canresult a data that is more frontier such as zero. From class 99-90 it started with 30% and ended at100% for class 59-50.TASK2Q2) A)Calculation of sample sizeSample size means the tally of respective observation that help in statistical setting. Is isuseful in scientific research and public opinion survey. Sample size those are small in size showsunreliable result whereas as large sample size demands good deal of time and resources.Calculation is shown below:S= √SS / n-1S= Standard errorSS= Sum of square N-1= Sample size= 2.358=√354.689 / N-1(2.358)2 = 354.689 / N-15.560.16(N-1) =354.6895.560.16N=360.24916 N= 64.79 approx.B) Determination of supply and unit price.2
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