3

Q1. Arranging similar things into groups or classes is called ___________ of data.

• Representation
• Classification
• Organisation
• Simplification

Solution

Classification of data

Q2. A jar contains black and white marbles. If the probability of selecting a black marble is 0.34, then what is the probability of selecting a white marble?

• 0.66
• 0.69
• 0.58
• 0.72

Solution

As the jar contains black and white marbles, and P(black marble) = 0.34 then, P(white marble) = 1 - 0.34 = 0.66

Q3. Range = Largest value - ______ value

• Smallest
• Constant
• Mid
• First

Solution

Range is the difference between the largest value and the smallest value.

Q4. The axes ______ tell us what information is presented on each axis.

• Label
• Title
• Bar
• Scale

Solution

Label

Q5. A ______ is described as the numeric value separating the higher half of a sample.

• Mean
• Median
• Mode
• Range

Solution

Median

Q6. To analyze the performance of Indian cricket team, the appropriate data collection is

• Finding runs scored by each player in all International matches in a year
• Finding bowling performance of all bowlers in all International matches in a year
• Finding runs scored and bowling performance of each player in all International matches
• Finding runs scored by top five batsmen and bowling performance of main 5 bowlers of the team in all International matches.

Solution

To analyse the team's performance, we must analyse the performance of each of the player. Thus option C.

Q7. Find the median of the following data: 15, 22, 8, 16, 0, 10, 16

• 16
• 15
• 10
• 8

Solution

Arranging the given data in ascending order, we get 0, 8, 10, 15, 16, 16, 22, Total number of observations (items) = 7 (odd) The middle observation is 15 Hence, the median of the given data = 15

Q8. When a coin is tossed, outcomes are 

• Head, Tail
• Head
• Tail
• Head, Head

Solution

When a coin is tossed, the possible outcomes are Head and Tail.

Q9. The event of toss of a coin landing in head is _______ event.

• Uncertain
• Certain
• Impossible
• None of the above

Solution

Uncertain event as a coin can land on Tail also.

Q10. The mode of following data is: 14, 11, 12, 13, 11, 12, 11

• 14
• 11
• 12
• 13

Solution

Since 11 has highest frequency, so the mode is 11.

Q11. _____________data consists of information gathered for some specific purposes.

• Secondary
• Non-primary
• Primary
• Table

Solution

Primary data consists of information gathered for some specific purposes.

Q12. The raw information data is also known as _______ data .

• Primary
• Secondary
• Basic
• Temporary

Solution

Primary

Q13. What is the median of following data?34, 27, 45, 55, 22, 30, 40.

• 39
• 36
• 34
• 35

Solution

Arranging data in ascending order, we get  22,27,30, 34,40, 45, 55.   Number of terms = 7 (odd) Thus, median will be the term =4^th term i.e. Median = 34

Q14. When you toss a coin, there are _______ possible outcomes.

• One
• Two
• Zero
• Three

Solution

When a coin is tossed, there are two possible outcomes - Head and Tail.

Q15. Which of the following is not classified as quality?

• Nationality
• Weight
• Employment
• Literacy

Solution

Weight

Q16. Median of 11, 10, 12, 4, 9, 18, 6 is ______ .

• 11
• 10
• 4
• 9

Solution

The given observations can be arranged in ascending order as 4, 6, 9, 10, 11, 12, 18 Here, number of observations = 7 (odd) Median = Middle observation = 10

Q17. Which value can be called as median of a data in which number of observations is odd?

• Middle value
• Minimum value
• Maximum value
• Average value

Solution

Median is the middle value if the numbers of observations are odd.

Q18. The cholesterol counts of a sample of 6 patients are 122, 214, 175, 200, 198 and 211. What is the mean sample of this data?

• 125
• 130.47
• 186.67
• 192.17

Solution

Q19. The grouped data axis is always at the _______ of the bars.

• Parallel
• Base
• Horizontal
• None

Solution

Base

Q20. The median of following data is: 4, 5, 4, 3, 4, 3, 1

• 4
• 3
• 5
• 2

Solution

Arranging in ascending order, we have 1, 3, 3, 4, 4, 4, 5 Here N = 7 (odd) So, median = 4^th observation = 4.

Q21. The mean of first five odd numbers is 

• 4
• 5
• 6
• 7

Solution

First five odd numbers are 1, 3, 5, 7, 9 The mean of first five odd numbers is =  Therefore, the mean is 5.

Q22. Which value can be called as a mean for the given data ?

• Average value
• Middle value
• Minimum value
• Maximum value

Solution

Mean is also known as an average value as it gives an average number associated with the data.

Q23. The shoe size of 10 adults is as follows: 7, 7, 6, 6, 8, 9, 8, 6, 8, 10 This is ______ data.

• Raw
• Organized
• Primary
• Secondary

Solution

Raw Data

Q24. The mean in the following numbers 19, 21, 18, 17, 18, 22, 46 ______ is

• 1
• zero
• 23
• 27

Solution

Q25. The graph ______ gives an overview of the information being presented in the graph.

• Label
• Axis
• Title
• Bars

Solution

Title

Q26. By ______ information in different ways we can make it easier to read and answer questions and solve problems.

• Dividing
• Organizing
• Collecting
• Tablulating

Solution

By organizing information in different ways we can make it easier to read and answer questions and solve problems.

Q27. What is the range in the following numbers:19, 21, 18, 17, 18, 22, 46

• 19
• 29
• 30
• zero

Solution

Arranging the values in ascending order, we get17, 18, 18, 19, 21, 22, 46,  Range = maximum value - minimum value = 46 -17 = 29

Q28. In a pictogram @ represents 2 people. How many people @@@ represent?

• 6
• 4
• 3
• 7

Solution

@ = 2 people Thus, @@@ = 2 x 3 = 6 people

Q29. A student has got the following scores in his tests: 87, 95, 76, and 88. He wants average of 85 or better overall. What is the minimum score he must get on the last test in order to achieve that average?

• 100
• 79
• 60
• 82

Solution

The unknown score is "x". The desired average = 85 So, Multiplying through by 5 and simplifying, 87 + 95 + 76 + 88 + x = 425                      346 + x = 425                                x = 79

Q30. Which value can be called as the mode of the given data?

• Middle value
• Average value
• Most often occuring value
• Maximum value

Solution

Mode is the observation that occurs most often in the given set of observations.

Q31. The word DATA is derived from the latin word __________.

• Datam
• Datum
• Date
• Dot

Solution

The word DATA is derived from the latin word Datum.

Q32. Data _______ is fundamental for managing data.

• Classification
• Capturing
• Representation
• All the above

Solution

Capturing, Classification and Representation are all necessary for managing data.

Q33. Bar graphs usually present _______ and numeric variables grouped in class intervals.

• Horizontal
• Categorical
• Vertical
• None of the above

Solution

Categorical

Q34. ______ is rectangular blocks that can have their base at either the vertical axis or horizontal axis.

• Title
• Base
• Bar
• None

Solution

Bar

Q35. A _______ is a collection of numbers gathered to give some information.

• Data
• Table
• Chart
• Graph

Solution

Data

Q36. Collection and tabulation is the basic for data

• Organization
• Handling
• Formulation
• Representation

Solution

Handling

Q37. __________ presentation is a descriptive form of presentation of data where data is described by paragraphs of text.

• Tabular
• Diagrammatic
• Textual
• Visual

Solution

Textual

Q38. Sara got 98, 100, 65, 78, 98, 35, 100, 100, 45 and 50 on her 10 consecutive reading tests each worth 100 marks. What is the mean of her test scores?

• 67.1
• 7.69
• 76.9
• 30.5

Solution

Q39. The ______ axis has a scale that is a measure of the frequency or amounts of the different data groups.

• Frequency
• Grouped data
• Vertical
• Horizontal

Solution

  The vertical axis has a scale that is a measure of the frequency or amounts of the different data groups.

Q40. _______ are two types of data.

• Primary and secondary
• Private  and public
• Raw and finished
• Real and virtual

Take Another Test