Introduction average departure delay minutes for flights from

Topic: RegionUsa
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Last updated: May 14, 2019

IntroductionMy T-test going to look at theaverage departure delay minutes for flights from Delta Airline’s.

Theseairports are John F. Kennedy Airport (JFK) and Hartsfield-Jackson AtlantaAirport (ATL). According to a USA Today article I found, “Hartsfield-JacksonAtlanta International Airport is forecast to take the 2016 title as the “World’sBusiest Airport.

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” It would mark the 19th consecutive year Atlanta’sairport counted more passengers than any other airport on the planet” (Mutzabuagh,B., 19 Apr. 2017).PopulationThe two populations for this T-testproject will be generated under the operations of Delta Airlines on theiraverage departure delay minutes between both JFK and ATL.

This information wasmade available to me via StatCrunch under the Delta Airlines database.VariablesMy two variables are first thedependent variable which is Delta Airline’s departure delay minutes. Next isthe independent variable which is going to be flights from the origins of ATLand JFK. Delay departure minutes can be based off of the plane taking off orlanding after the scheduled arrival time.

Collectionof DataAll data was retrieved from theStatCrunch website. The data numbers can be seen in the last section of thisproject.HypothesisStatement / Statistical Test            In this, I adopted two sample T-testthat deal with the departure delay minutes of my two separate airports. Thetotal average along with departure delay minutes of Delta’s flights from ATLand JFK were compared. I will use StatCrunch to do a one tailed, dependentT-test for my data. My null hypothesis shows no slight difference on departuredelay minutes of the two busiest airports departure time for ATL and JFK.

Thiswill be written as, :    = Myalternate hypothesis has a few differences between the two airports and will bewritten as,   DescriptiveStatistics            For average, which was the mean atn=30, the departure flights from ATL was 13.57 minutes and a standard deviationof 30.50. As you can see, the standard error was 5.568, variance was 930.

25 andso forth on the following table. Summary statistics for DepDelMin:Where:Origin = “ATL”Group by: Origin Origin n Mean Variance Std. dev.

Std. err. Median Range IQR ATL 30 13.566667 930.25402 30.500066 5.5685247 2 151 16  Inthe second table, this shows departure times for JFK, n=30. The following tableshows all the descriptive information.

Summary statistics for DepTime:Where: Origin = “JFK”Group by: Origin Origin n Mean Variance Std. dev. Std. err. Median Range IQR JFK 30 12.966667 1164.723 34.128038 6.

2308988 0 124 2  ConfidenceInterval / Hypothesis Test            With using a 95% confidence intervalfor my project, I selected 60 samples from the 2 different populations. Eachsample size as mentioned above was n=30. The upper and lower confidenceintervals was 17.331991, -16.131991 with a standard error of 8.35. Hypothesisresults were found using a test statistics difference of 0.

6.Two sample T confidence interval:?1 : Mean of DepDelMin where Origin = “ATL”?2 : Mean of DepTime where Origin = “JFK”?1 – ?2 : Difference between two means(without pooled variances)95% confidence interval results: Difference Sample Diff. Std. Err.

DF L. Limit U. Limit ?1 – ?2 0.6 8.3565882 57.28248 -16.131991 17.331991   StatCrunch1          1260    43        DL       ATL    1234    42          743      64        DL       ATL    2032    03          667      78        DL       ATL    1212    74          898      140      DL       ATL    1000    175          1588    360      DL       ATL    1138    476          1443    396      DL       ATL    2219    47          1159    507      DL       ATL    2225    308          360      667      DL       ATL    1045    09          2178    734      DL       ATL    1428    010        1413    743      DL       ATL    1502    011        1250    841      DL       ATL    2039    412        1249    898      DL       ATL    1347    013        2041    1119    DL       ATL    2206    15114        1286    1159    DL       ATL    1414    2715        78        1249    DL       ATL    2054    016        507      1250    DL       ATL    2039    017        1472    1260    DL       ATL    2137    018        2046    1286    DL       ATL    2201    019        1433    1413    DL       ATL    1210    020        1663    1433    DL       ATL    2208    321        43        1443    DL       ATL    1109    422        2463    1472    DL       ATL    949      023        140      1588    DL       ATL    923      024        396      1663    DL       ATL    1731    025        1119    1958    DL       ATL    954      6                              26        2075    2041    DL       ATL    1407    1627        1958    2046    DL       ATL    2015    7028        64        2075    DL       ATL    841      1629        734      2178    DL       ATL    946      130        841      2463    DL       ATL    1856    02670    2857    2680    DL       JFK     5          18502671    2748    2687    DL       JFK     77        21022672    2702    2696    DL       JFK     0          6492673    2798    2700    DL       JFK     0          10162674    2855    2701    DL       JFK     0          16352675    2838    2702    DL       JFK     0          16202676    2778    2703    DL       JFK     0          8592677    2746    2724    DL       JFK     45        17202678    2815    2746    DL       JFK     0          17112679    2764    2748    DL       JFK     0          17352680    2851    2753    DL       JFK     0          8152681    2860    2755    DL       JFK     0          16162682    2756    2756    DL       JFK     0          14302683    2816    2764    DL       JFK     2          18072684    2813    2778    DL       JFK     0          15282685    2755    2784    DL       JFK     0          19532686    2680    2798    DL       JFK     124      21592687    2687    2801    DL       JFK     9          10492688    2703    2813    DL       JFK     0          1759

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