CBSE Class 11 (Arts) Use of Statistical Tools — practice questions
59 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 (Arts) Use of Statistical Tools in the app →Why must a project define its target group early on?A postal questionnaire in a survey must carry which item?Secondary data are usually preferred when a project is short of what?Which kind of data is collected first hand through a questionnaire?Which of these is a way of collecting primary data in a project?Which pair is used to present organised data in a project?In project analysis, which tool is used to find the average?In project analysis, which tool measures how much the data vary?Which tool shows the relationship between two variables, if any exists?Which is the last step in making a statistical project?What does the bibliography of a project report list?What may a project try to predict in its conclusion?Income classes 0-10,000 to 30,000-40,000 hold 20, 40, 30 and 10 families. Mean income?For 100 families, step size 5,000, sum fd' = -40 and sum fd'^2 = 340. SD?Spending classes of width 40 from 0 to 200 hold 5, 20, 40, 30, 5 families. Mean?What is a questionnaire?Compared with verbal or phone surveys, questionnaires are generally what?A closed question offering only two options is called what?A closed question lists brand names with no order among them. Which type is it?A question in which the respondent writes an answer in his own words is what?To get the best response rates, question order should run from what?What do screening questions do in a questionnaire?Which questions are easy to answer and help capture interest?An item saying 'If yes, answer question 3' is which question type?Which wording is advised when writing questionnaire items?Why is 'Do you like strawberries and potatoes?' a poor item?Which fault should a questionnaire item avoid?Which frequently used rating scale has anchors like 'strongly agree'?In which mode does an interviewer present the items orally?Which mode picks later items based on a respondent's earlier answers?Which step belongs to best-practice questionnaire translation?Sampling is the selection of what from a statistical population?Compared with a census, sampling has which advantage?Who estimated the population of France in 1786 using a sample?What ruined the 1936 Literary Digest election prediction?A list that identifies every element of a population for sampling is what?In a probability sample, what is true of each unit's chance of selection?Which of these is a probability sampling method?What holds in a simple random sample of a given size?Picking every tenth name from an ordered list is which method?Systematic sampling is especially vulnerable to what?When is systematic sampling a type of probability sampling?Sampling each distinct category of a population separately is what?Stratified sampling works best when variability within strata is what?Correlation is a statistical relationship between how many variables?'Correlation does not imply' what?If two variables are independent, they must be what?The Pearson coefficient is sensitive only to which kind of relationship?Which of these is a rank correlation coefficient?Why are correlations useful in practice?A low standard deviation shows that the values are what?A data set has a high standard deviation. What does this show?In a normal distribution, what share lies within one standard deviation?The standard deviation is the square root of which measure?Why is standard deviation easier to interpret than variance?Variance is the average of which quantities?The standard deviation of repeated sample means is called what?Which ratio of standard deviation to mean is dimensionless?Standard deviation measures variation about which average?