UNIVERSITATEA ,, ALEXANDRU IOAN CUZA" IAsI
FACULTATEA DE ECONOMIE sI ADMINISTRAREA
ANALIZA STATISTICA A OPINIILOR PRIVIND PREFERINTA PENTRU CANDIDATUL LA PRESEDENTIA ROMĀNIEI
Economie si Gestiune Financ 13413n139n iar Bancara
Februarie 2005
CUPRINS
Construirea bazei de date
Verificarea bazei de date
Analiza statistica univariata a datelor
Frequency
Percent
Valid Percent
Cumulative Percent
Valid
economist
inginer
jurist
profesor
altele
Total
In tabelul de mai sus observam urmatoarele :
CANDIDATI LA PRESEDENTIE
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Frequency |
Percent |
Valid Percent |
Cumulative Percent |
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Valid |
basescu |
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nastase |
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becali |
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altele |
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Total |
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In tabelul de mai sus observam urmatoarele :
N
Valid
Missing
Mean
Std. Error of Mean
Median
Mode
Std. Deviation
Skewness
Std. Error of Skewness
Kurtosis
Std. Error of Kurtosis
Minimum
Maximum
Observam urmatoarele :
Analiza statistica bivariata a datelor
candidat la presedintie = T. Basescu
Stem-and-Leaf Plots
milioane lei Stem-and-Leaf Plot for
PREFER.1= basescu
Frequency Stem & Leaf
Stem width: 1.00
Each leaf: 1 case(s)
candidat la presedintie = A. Nastase
Stem-and-Leaf Plots
milioane lei Stem-and-Leaf Plot for
PREFER.1= nastase
Frequency Stem & Leaf
Stem width: 10.00
Each leaf: 1 case(s)
candidat la presedintie = I. Becali
Stem-and-Leaf Plots
milioane lei Stem-and-Leaf Plot for
PREFER.1= becali
Frequency Stem & Leaf
Stem width: 1.00
Each leaf: 1 case(s)
candidat la presedintie
Profesia intrvievatilor
candidat la presedintie
Pearson Correlation
Sig. (2-tailed)
N
Venitul realizat
Pearson Correlation
Sig. (2-tailed)
N
One-Sample Kolmogorov-Smirnov Test
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milioane lei |
varsta persoanei in ani |
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N |
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Normal Parameters |
Mean |
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Std. Deviation |
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Most Extreme Differences |
Absolute |
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Positive |
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Negative |
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Kolmogorov-Smirnov Z |
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Asymp. Sig. (2-tailed) |
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a Test distribution is
b Calculated from data.
Valoarea coeficientului de semnificatie de 0,076 (<0,1) arata ca exista o diferenta semnificativa intre distributia variabilei venit si distributia normala.
Correlations
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|
varsta persoanei in ani |
milioane lei |
|
Spearman's rho |
varsta persoanei in ani |
Correlation Coefficient |
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Sig. (2-tailed) |
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N |
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milioane lei |
Correlation Coefficient |
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Sig. (2-tailed) |
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N |
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** Correlation is significant at the .01 level (2-tailed).
P=0,004< 0.01 deci exista o corelatie directa puernica. (la nivel de incredere de 99%)intre veniturile intre veniturile intervievatilor si virsta.
Cu cit valoarea se apropie mai mult de unu cu atit legatura este mai puternica .
Variables Entered/Removed
|
Model |
Variables Entered |
Variables Removed |
Method |
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|
varsta persoanei in ani |
|
Enter |
a All requested variables entered.
b Dependent Variable: milioane lei
Model Summary
|
Model |
R |
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Adjusted
|
Std. Error of the Estimate |
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a Predictors: (Constant), varsta persoanei in ani
ANOVA
|
Model |
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Sum of Squares |
df |
Mean Square |
F |
Sig. |
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Regression |
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Residual |
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Total |
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a Predictors: (Constant), varsta persoanei in ani
b Dependent Variable: milioane lei
Coefficients
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Unstandardized Coefficients |
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Standardized Coefficients |
t |
Sig. |
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Model |
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B |
Std. Error |
Beta |
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(Constant) |
-8.765E-02 |
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varsta persoanei in ani |
9.545E-02 |
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a Dependent Variable: milioane lei
ANOVA
Pentru a vedea daca exsta diferente semnificative intre mediile veniturilor obtinute in functie de profesiile luate in analiza utilizam ANOVA ONE WAY , variabila dependenta fiind veniturile , iar cea independenta fiind profesia .
Descriptives
milioane lei
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|
N |
Mean |
Std. Deviation |
Std. Error |
95% Confidence Interval for Mean |
|
Minimum |
Maximum |
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Lower Bound |
Upper Bound |
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economist |
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inginer |
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jurist |
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profesor |
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|
altele |
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Total |
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Test of Homogeneity of Variances
milioane lei
|
Levene Statistic |
df1 |
df2 |
Sig. |
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ANOVA
milioane lei
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|
Sum of Squares |
df |
Mean Square |
F |
Sig. |
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Between Groups |
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Within Groups |
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Total |
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Variables Entered/Removed
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Std. Residual |
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Stud. Residual |
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Deleted Residual |
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6.498E-02 |
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Stud. Deleted Residual |
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Mahal. Distance |
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Cook's Distance |
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Centered Leverage Value |
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a Dependent Variable: varsta persoanei in ani
Descriptives
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Statistic |
Std. Error |
|
varsta persoanei in ani |
Mean |
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99% Confidence Interval for Mean |
Lower Bound |
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Upper Bound |
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5% Trimmed Mean |
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Median |
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Variance |
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Std. Deviation |
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Minimum |
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Maximum |
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Range |
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Skewness |
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Kurtosis |
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Putem spune cu o incredere de 99%ca virsta medie este intre 26.554 si 32.736
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