All the best for your NPTEL exams guys:-

1. If all the data points are same, statistical dispersion becomes –

 a. 1

 b. 10

 c. 100

 d. None

Ans: d

2. The desirable characteristics of an IoT sensor node are

 a. Energy-efficiency

 b. Distributed sensing

 c. Low-cost

 d. All of the above

Ans: d

3. Long term trend tracking and preventive care in IoT healthcare is possible due to

 a. ability of smart devices to collect data autonomously

 b. ubiquitous connectivity

 c. smart algorithms and analytics

 d. all of the above

Ans: d

4. Activity monitoring in smart homes:

 a. Provides better quality of life

 b. Provides information accurately in a reliable manner

 c. Provides continuous monitoring support.

 d. All of these

Ans: d

5. Network-based activity recognition is:

 a. Larger and processing intensive

 b. Low power consumption

 c. Dependent on network connection

 d. All of these

Ans: d

6. Which of these is a feature of qualitative data analytics?

 a. Data is not described through numerical values

 b. Described by some sort of descriptive context such as text

 c. Data can be gathered by many methods such as interviews, videos and audio recordings, field notes.

 d. All of these

Ans: d

7. Which is true?

 a. The statistical model is defined as the mathematical equation that are formulated in the form of relationships between variables.

 b. A statistical model illustrates how a set of random variables is related to another set of random variables.

 c. Both a and b

 d. None of these

Ans: c

8. ANOVA is applied

 a. when less than 2 samples/populations are to be compared

 b. when more than 2 samples/populations are to be compared

 c. Both a and b

 d. None of these

Ans: b

9. Which of the following can be the reasons for packet drop in IoT network?

 a. Dense foliage

 b. High temperature

 c. Rain

 d. All of the above

Ans: d

10. The types of ANOVA are:

 a. 2

 b. 3

 c. 4

 d. 5

Ans: b

11. Wearables can be used for:

 a. Child‐care

 b. Elderly‐care

 c. Entertainment

 d. All of these

Ans: d

12. Wearable-based activity monitoring can be used for:

 a. Continuous monitoring of activity results in daily observation of human behavior and repetitive patterns in their activities.

 b. Easy integration and fast equipping

 c. Long term monitoring

 d. All of these

Ans: d

13. Which of these is true is case of network based activity monitoring?

 a. Larger and processing intensive methods can be applied

 b. Group based analytics possible

 c. Both a and b

 d. None of these

Ans: c

14. What is the network topology of Ambusens WBAN devices?

 a. Bus topology

 b. Star Topology

 c. Mesh Topology

 d. None of the above

Ans: b

15. Which of these sensors can be most cheaply used for basic activity monitoring in wearables?

 a. Accelerometer

 b. Cameras

 c. LIDARs

 d. LED

Ans: a