EXL Service Assistant Manager Interview Questions and Answers

SARIMA extends ARIMA by incorporating seasonality, making it suitable for seasonal time series data.

• ARIMA (AutoRegressive Integrated Moving Average) is used for non-seasonal time series data.

• SARIMA (Seasonal ARIMA) includes seasonal components, making it ideal for data with seasonal patterns.

• ARIMA is defined by three parameters: p (autoregressive), d (differencing), and q (moving average).

• SARIMA adds seasonal para...read more

The central limit theorem states that the distribution of sample means approaches a normal distribution as sample size increases.

• As sample size increases, the distribution of sample means becomes approximately normal, regardless of the population's distribution.

• This theorem is crucial for inferential statistics, allowing for hypothesis testing and confidence interval estimation.

• Example: If you repeatedly sample th...read more

Yes, I am proficient in Microsoft Excel, utilizing its features for data analysis and reporting effectively.

• Advanced formulas: I regularly use VLOOKUP and INDEX-MATCH for data retrieval.

• Data visualization: I create pivot tables and charts to summarize complex data.

• Automation: I use macros to streamline repetitive tasks, saving time and reducing errors.

• Data analysis: I apply conditional formatting to highlight key ...read more

The Order-to-Cash cycle encompasses all steps from order placement to cash receipt in a business transaction.

• 1. Order Placement: Customer places an order via various channels (e.g., online, phone).

• 2. Order Processing: The order is confirmed, and inventory is checked for availability.

• 3. Order Fulfillment: Products are picked, packed, and shipped to the customer.

• 4. Invoicing: An invoice is generated and sent to the ...read more

A Standard Operating Procedure (SOP) is a set of step-by-step instructions to help workers carry out routine operations.

• Consistency: SOPs ensure that tasks are performed consistently, reducing variability and errors. For example, a manufacturing SOP might detail the exact steps for operating machinery.

• Quality Control: SOPs help maintain quality standards by providing clear guidelines. In a laboratory, an SOP might...read more

A variable is a symbolic name associated with a value and can change during program execution.

• Variables store data values, e.g., 'age = 25'.

• They can hold different data types: integers, strings, etc.

• Variables can be global (accessible anywhere) or local (accessible within a function).

• Example: In Python, 'x = 10' defines a variable 'x' with a value of 10.

Budgeting is the process of creating a plan to manage income and expenses over a specific period.

• Establishes financial goals: Helps set targets for savings and spending.

• Tracks income and expenses: Monitors cash flow to ensure financial stability.

• Allocates resources: Distributes funds to various departments or projects based on priorities.

• Facilitates decision-making: Provides a framework for evaluating financial pe...read more

Budgeting involves setting financial goals and creating a plan to achieve them, while forecasting involves predicting future financial outcomes based on past data and trends.

• Budgeting is a proactive process that involves setting financial goals and creating a plan to achieve them.

• Forecasting is a reactive process that involves predicting future financial outcomes based on past data and trends.

• Budgeting helps in co...read more