• For the dataset X={1.5, 2.1, 1.2, 3.4, 5.6, 3.3, 4.5, 5.1, 2.3}. The range is:

1. 2.3
2. 3.9
3. 4
4. 4.4

• In ungrouped data analysis , the frequency of each data value is taken as 1.

1. No
2. Yes

• For a dataset X=1.1, 1.2, 1.3, 1.4, 1.9, 2.1, 2.2, 2.8, 3.1, 3.2, 6.1, 1.5, new range at 10% trimmed values is?

1. 5.1
2. 4.1
3. None of the above
4. 3.9

• Outliers are values in the dataset that can be best explained by:

1. abrupt fluctuations
2. useful results
3. errors in data
4. errors in the data analysis

• Sum of all relative frequencies is always equal to?

1. 100
2. None of the above
3. 1
4. total dataset size

• The minimum and maximum values in a box plot, to identify outliers in a dataset X are?

1. Xmin=Q1-1.5IQR, Xmax= Q3+1.5IQR
2. Xmin=Q1-2.5IQR, Xmax= Q3+1.5IQR
3. Xmin=Q1+1.5IQR, Xmax= Q3-1.5IQR
4. None of the above

• If in calculation no. of classes comes out to be equal to 6.01, then correct no. of classes should be atleast?

1. 7
2. 6
3. 5
4. 7.1

• Range gives the idea of variations present in the dataset.

1. Yes
2. None of the above
3. No
4. Sometimes

• Class mark is the middle value of a class?

1. sometimes
2. None of the above
3. No
4. Yes

• Same data can be analyzed as ungrouped or grouped data analysis

1. Yes
2. No

• To cut data in 70 parts we need how many trimming positions?

1. 69
2. None of the above
3. 71
4. 70

• what is the sign of standard deviation when written with mean to find predicted outcome?

1. positive
2. negative
3. both negative and positive
4. None of the above

• Classes, class boundaries and class marks are different ways of writing same data?

1. Not always
2. Yes
3. No
4. None of the above

For any dataset D5=P50=Q2 is the central value of the datset called as median.

1. None of the above
2. incorrect statement.
3. Not always
4. correct statement

• IQR is the range between?

1. Q3 and Q1
2. Q1 and Q3
3. Q2 and Q3
4. Q1 and Q2