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Differencing is a technique that transforms non-stationary time series data into stationary data by subtracting the previous observation from the current observation. This process helps remove trends and seasonality, making the data suitable for time series models that assume stationarity, such as ARIMA. By achieving stationarity, differencing allows for consistent statistical properties across time, ensuring that mean, variance, and autocorrelation remain constant. This is particularly critical in time series forecasting, where reliable predictions depend on data stability, allowing analysts to model data accurately and account for historical patterns. The other options are incorrect because: • Option 1 (Exponential Smoothing) smooths data but does not specifically address stationarity. • Option 2 (Moving Average) is used for smoothing data but does not inherently stabilize mean and variance. • Option 4 (Seasonal Adjustment) removes seasonal effects but may not make data stationary. • Option 5 (Decomposition) breaks data into components but does not necessarily make it stationary.
Select the option that is related to the third term in the same way as the second term is related to the first term.
DFB : GHC :: LNJ : ?
Four letter-clusters have been given out of which three are alike in some manner and one is different. Select the letter-cluster that is different.Â
Select the correct option that indicates the arrangement of the given words in the order in which they appear in an English dictionary.
1. Grasp<...
‘A # B’ means ‘A is the brother of B’.
‘A @ B’ means ‘A is the daughter of B’.
‘A & B’ means ‘A is the husband of Bâ...
The position of how many alphabets will remain unchanged if each of the alphabets in the word ‘MANGROVE’ is arranged in alphabetical order from left...
Arrange the following in the English alphabetical order:
(i) Exploration
(ii) Exploitative
(iii) Exploratory
(iv) ExploitationÂ
WATER : RVOZM :: BOTTLE : ?
Select the correct combination of mathematical signs that can sequentially replace the '$' signs and balance the equation.
180 $ 9 $ 6 ...
How many pairs of letters are there in the word ‘FARMHOUSE’ each of which have as many letters between them (both forward and backward direction) in...
In a certain code language, SAFETY is written as 21 – 3 – 8 – 7 – 22 – 27. How will FRIEND be written in that code language?
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