Continue with your mobile number
The Dickey-Fuller Test is a widely used statistical test in time series analysis to evaluate if a series is stationary. It tests the null hypothesis that a unit root is present in the series, indicating non-stationarity. If the test statistic is significantly lower than a threshold (indicating a low p-value), the null hypothesis is rejected, suggesting the data is stationary. Achieving stationarity is crucial for time series models like ARIMA, which assume stable mean and variance over time. Therefore, the Dickey-Fuller Test is essential for determining whether data requires differencing or other transformations before analysis. The other options are incorrect because: • Option 1 (Shapiro-Wilk Test) checks for normality, not stationarity. • Option 3 (Chi-Square Test) evaluates relationships between categorical variables. • Option 4 (Jarque-Bera Test) tests normality in large samples, not stationarity. • Option 5 (ANOVA) assesses mean differences across groups, unrelated to stationarity.
Statements:
Some couliflower are cabbage.
Some cabbage are asparagus.
Some asparagus are pumpkin.
Conclusions:
I...
In each question below are given three statements followed by three conclusions numbered I, II and III. You have to take the two given statements to be...
Statements:All males are females.
All females are men.
No man is a woman.
All women are ...
Statements:
Every pilot is doctor.
34% doctors are teachers.
Few teachers are lawyers.
Conclusions:
I. Some pilots ar...
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at varianc...
Statements : All dens are cattle.
Some cattle are cows.
No cow is a horse.
Conclusions:I. All dens are not horses.
II. So...
Statements:
Some Applications are not Leaves.
All Leaves are Granted.
Only a few Granted are Considerations.
Conclusion...
Statement: Only a few Earth is Sun.
All Sun is Moon.
Only Moon is Stars.
Statements : No samsung is a micromax.
All sony are micromax.
Some nokia are samsung. <...
Statement: No cooler is a fan.
All fans are ACs.
No AC is a button.
Conclusion: I. No fan is a button.
II. Some ACs are c...