CBSE Class 11 (Arts) Collection, Organisation and Presentation of Data — practice questions
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Practice CBSE Class 11 (Arts) Collection, Organisation and Presentation of Data in the app →Data a researcher gathers first hand through own enquiry are called what?Data already collected and processed by another agency are called what?What is the main advantage of using secondary data in a study?In statistics, a method of gathering information from individuals by asking them questions is called a what?Which instrument is most commonly used to collect data in surveys?Which question type biases responses and should be avoided?A question that hints at how the respondent should answer, like one praising the product, is called what?In what order should the questions in a questionnaire generally be arranged?The question 'What would you like to do after college?' is an example of which type of question?A survey question that allows only 'yes' or 'no' as the answer is called what?What is a key advantage of closed-ended questions in a survey?What is the main difficulty with open-ended questions?Why is an 'Any other (please specify)' choice given in a multiple choice question?Which of these is one of the three basic ways of collecting survey data?What is a major benefit of personal interviews?Which mode reaches remote people cheaply, free of interviewer influence?What is a common disadvantage of mailed questionnaires?Compared with personal interviews, telephone interviews are generally what?A try-out of a questionnaire on a small group before the main survey is known as what?What is a pilot survey mainly used to find out?A survey that covers every element of the population is known as what?After how many years is the Census of India carried out?Which body publishes the demographic data collected in the Census of India?In statistics, the totality of items under study is called what?A group or section of the population from which information is actually obtained is called what?What advantage does a representative sample offer over a census?Why are sample surveys preferred to a census?The two main types of sampling are which of the following?What is the defining feature of random sampling?Writing the names of all units on slips, mixing them and drawing a few is known as which method?In exit polls, whom do pollsters ask about their votes?In non-random sampling, what plays an important role in choosing units?Which statement is true about non-random sampling?Which is a basis for selecting units in a non-random sample?The difference between a sample estimate and the actual value of the population parameter is called what?How can the magnitude of sampling error be reduced?Farmer incomes are 500, 550, 600, 650, 700. A sample of 500 and 600 is drawn. Sampling error in the mean?Sampling bias arises when what happens?A non-response error arises when an interviewer does what?Why are non-sampling errors more serious than sampling errors?Which of the following can still contain non-sampling errors?Errors in data acquisition arise from which of the following?Which agency runs surveys in rounds and publishes Sarvekshana?Arranging or organising things into groups or classes based on some criteria is called what?Data that have been collected but not yet arranged or grouped are commonly described as what?Grouping India's population by years 1951, 1961, 1971 is which classification?Grouping data by states, districts or countries is known as which classification?Grouping people by gender and then by marital status is an example of which classification?Which characteristics are quantitative in nature and used for quantitative classification?A variable that can take any numerical value, whole or fractional, within a range is called what?Which of these variables is continuous?A variable that changes only by finite jumps, taking no value between adjacent values, is called what?Which way of classifying raw data shows values spread across classes?In a frequency distribution, what does the class frequency mean?The class limits of a class are 60 and 70. What is its class interval (class width)?A class has limits 30 and 40. What is its class mark?What is the usual number of classes in a frequency distribution?For which type of data are unequal class intervals most suitable?In which class intervals are values at both limits counted in that class?In which type of class interval is an item equal to a class limit left out of that class?Inclusive classes 900-999 and 1000-1099 are made continuous. What is the first adjusted class?The class frequency in a frequency distribution is counted by using what?What is the shortcoming of grouping data into classes?The classification of data for a discrete variable is known as what?A frequency distribution of two variables, such as sales and advertisement expenditure of firms, is called whaWhich form of data presentation is more suitable when the quantity of data is not large?What is a serious drawback of textual presentation of data?In a tabular presentation, rows are read in which direction?Tabulating data by village, district or state is based on which kind of classification?Yearly sales of a tea shop from 1995 to 2000 show which classification?What is the purpose of numbering a tabulated presentation?What are the headings at the top of each column of a tabulation called?Where should the unit of measurement be stated in a tabulation?Which part of a tabulation holds the actual data?Where is the data source usually written in a tabulation?Which method of presenting data gives the quickest understanding of the actual situation?A simple bar chart consists of which of the following?In a bar chart, from which level does the height of each bar start?A multiple bar chart is used mainly for which purpose?Which chart is very useful for comparing the sizes of different component parts of a whole?In a pie chart, one per cent of the total is represented by what central angle?In a pie chart a component forms 40 per cent of the total. What angle does it subtend at the centre?Before drawing a pie chart, absolute values of the components should first be converted into what?A histogram is made up of rectangles whose areas are proportional to what?When a histogram has classes of unequal width, the heights of rectangles are adjusted using what?How is a histogram spaced, unlike a bar chart?A histogram can be drawn only for which kind of variable?Which measure of a frequency distribution can be read graphically from a histogram?In a histogram, which dimension of the rectangle is as important as its height?A frequency polygon joins which points of a histogram?A smooth freehand curve passing as closely as possible through the points of a frequency polygon is called whaAnother name for an ogive is what?How many ogives can be drawn for any grouped frequency distribution?The point where the 'less than' and 'more than' ogives intersect gives which measure?A time series chart that has time on the x-axis and the variable on the y-axis is called what?A time series line chart mainly helps in understanding what?In a component bar chart drawn for per cent data, what is the height of the whole bar?