Which time series forecasting method uses past values of the series and past forecast errors to make future predictions?

Which time series forecasting method is based on the assumption that future values of a series depend linearly on past values and past forecast errors?

A

Moving Average

B

Exponential Smoothing

C

ARIMA

D

Autoregressive Integrated Moving Average (ARIMA)

The question below consists of two predictions I and II followed by a statement. You have to consider the statement and two predictions and decide which of these predictions is implicit in the statement. Statement: Only scoring marks should not be the sole goal of education. Assumptions: I. Marks do not provide employment. II. We get seats in educational institutions by marks.

A

Only prediction I is implicit.

B

Both prediction I and prediction II are implicit

C

Neither the prediction I nor the prediction II is implicit.

D

Only prediction II is implicit

In a language class for 'making predictions', a teacher (T) has a conversation with students: T: Rajesh, what are we making predictions on? Rajesh: The plot of the story. T: Why are they called predictions, Irfan? Irfan: Because we need to guess what happens next. Which of the following is the MOST appropriate follow-up question to deepen students' understanding of this skill?

A

What do you think the main characters will do next?

B

What happened next in a similar story you read last year?

C

What clues does the story so far provide, on what will happen next?

D

What is the meaning of a plot of a story? Give an example.

Study the following information carefully and answer the questions that follows. 5 persons Anil, Bhagat, Ishan, Deepak and Parmish use 5 different apps namely, WhatsApp, Instagram, Twitter, Facebook and LinkedIn. They all wear different brands of shoes namely, Adidas, Reebok, Nike, Puma and Vans. The person who wears Puma shoes does not uses Facebook. Parmish wear Nike shoes and uses LinkedIn app. Anil who wear Adidas shoes but neither uses Facebook nor Twitter. Ishan neither wear Vans nor Puma shoes but he uses Twitter app. The person who uses WhatsApp doesn’t wear Adidas shoes. Bhagat uses Facebook app. Deepak wear which shoes brand, and also determine who uses Instagram?

A

Puma, Anil

B

Vans, Bhagat

C

Puma, Ishan

D

Vans, Deepak

Each of the question below consists of a question and three statements number I, II and III given below it. You have to decide whether the data provided in the statement are sufficient to answer the question. Two person X and Y together can make 25% of total number of bricks in 4.8 days. Another person Z can make 50 bricks in a day. What is the time taken by person X and Z together to make the total number of bricks? I. Dimensions of a brick is (3cm × 4cm × 5cm) while the dimension of a cuboids when all the bricks are put together is (72cm × 80cm × 50cm) and ratio of number of days taken by X and Y alone to make the total number of bricks is 3 : 2. II. The total number of bricks is 4800 and person Y can make 150 bricks in day. III. Total volume of all the bricks together is 1.008m3 and dimension of a bricks is (5cm × 6cm × 7cm) and time taken by Z to make total number of bricks is 200 % more than the total time taken by person Y to make total number of bricks.

A

Statement I alone is sufficient.

B

Statement III alone is sufficient.

C

Any one of them alone is sufficient.

D

All I, II and III together are sufficient.

E

Any two of them together are sufficient.

Which method in time series analysis is used to estimate the future values of a time series using past values and their associated weights?

A

Exponential Smoothing

B

Moving Average

C

ARIMA

D

Seasonal Decomposition of Time Series

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the fouralternatives. The very ___________________ of apologizing and forgiveness _________________ the importance of memory and the vitality of the community as a link between past,present and future. It ________________ the question of the responsibility ______________ the past and its injustices. Somehow for many politicians, the past is a different country for _________________ they have no responsibility. the responsibility ______________ the past and its injustices.

A

of

B

about

C

for

D

to

Which method in time series analysis is used to forecast future values by taking into account both trend and seasonality?

A

Exponential Smoothing

B

Moving Average

C

ARIMA

D

Seasonal Decomposition of Time Series

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the fouralternatives. The very ___________________ of apologizing and forgiveness _________________ the importance of memory and the vitality of the community as a link between past,present and future. It ________________ the question of the responsibility ______________ the past and its injustices. Somehow for many politicians, the past is a different country for _________________ they have no responsibility. the past is a different country for _________________ they have no responsibility.

A

that

B

those

C

which

D

whom

Following are the probable errors committed during organisational processes.
(i) Leniency or severity error
(ii) Primacy and recency effects
(iii) Halo effect
(iv) Spill over effect
(v) Status effect
(vi) Perceptual set
Which of the following statement(s) given above is/are true/false?
1. (i), (ii), (iii) are recruitment errors
2. (i), (ii), (iii) are recruitment errors and (iv), (v) and (vi) are rating errors
3. All are rating errors
4. None are recruitment errors

A

2 is true, 4 is false

B

1 is false, 3 is true

C

3 is true, 1 is false

D

3 and 4 are true, 1 and 2 are false

Which time series forecasting method uses past values of the series and past forecast errors to make future predictions?

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