McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Arts in Economics (BA Economics) .
| 51. |
When constructing a frequency distribution, which of the following rules must be followed? |
| A. | the midpoint of each class must be an integer |
| B. | the width of each class is equal to the lowest value in the data set |
| C. | the number of classes must be an even number |
| D. | adjacent classes cannot overlap |
| Answer» D. adjacent classes cannot overlap | |
| 52. |
The rule of thumb for creating a frequency distribution is to divide the data into 5-15 classes. While larger numbers of classes allow for larger data sets, how do you know exactly how many classes to use |
| A. | if in doubt about the number of classes, select 10 since it is the midpoint between 5 and 15 classes |
| B. | select the number of classes that provides definition to the shape of the data |
| C. | determine the width of the class interval, then calculate the number of classes |
| D. | any number of classes between 5 and 15 is sufficient |
| Answer» B. select the number of classes that provides definition to the shape of the data | |
| 53. |
Considering the various types of tables and charts you have studied, which table, chart, diagram or plot would you use to depict categorical data for two variables in a visual format |
| A. | bar chart |
| B. | pie chart |
| C. | scatter plot |
| D. | contingency table |
| Answer» A. bar chart | |
| 54. |
For the list of values, 13, 18, 13, 14, 13, 16, 14, 21, 13, the mean, median, mode, and range are in the order |
| A. | 15, 13, 14, 8 |
| B. | 15, 14, 13, 8 |
| C. | 8, 15, 14, 13 |
| D. | 14, 15, 13, 8 |
| Answer» B. 15, 14, 13, 8 | |
| 55. |
Arrange the numbers in numerical order and see which is repeated most often. This describes which measure of central tendency |
| A. | mean |
| B. | median |
| C. | range |
| D. | mode |
| Answer» D. mode | |
| 56. |
The cumulative frequency for a particular class is equal to 35. The cumulative frequency for the next class will be _________________ |
| A. | less than 35 |
| B. | equal to 65 |
| C. | 35 minus the next class frequency |
| D. | 35 plus the next class frequency |
| Answer» D. 35 plus the next class frequency | |
| 57. |
Which of the following would be most helpful in the construction of a pie chart |
| A. | cumulative percentages |
| B. | ogive |
| C. | relative frequencies |
| D. | frequency distribution |
| Answer» B. ogive | |
| 58. |
The highest bar in a histogram represents |
| A. | the class with the lowest relative frequency |
| B. | the class with the lowest frequency |
| C. | the class with the highest frequency |
| D. | the class with the highest cumulative frequency |
| Answer» C. the class with the highest frequency | |
| 59. |
The movie theater industry tracks ticket sales by age groups. A _______would provide an appropriate representation for the proportion of ticket sales attributed to each age group. |
| A. | ogive |
| B. | line graph |
| C. | scatter diagram |
| D. | pie chart |
| Answer» D. pie chart | |
| 60. |
You are constructing a histogram that is required to use 6 classes for a data set that ranges from 15 to 70. A class width of ____ units would be an appropriate choice |
| A. | 9 |
| B. | 10 |
| C. | 15 |
| D. | 6 |
| Answer» B. 10 | |
| 61. |
A _______ would be an effective tool to assess the relationship between the grade earned in a class and the number of hours spent studying |
| A. | scatter diagram |
| B. | bar chart |
| C. | histogram |
| D. | pie chart |
| Answer» A. scatter diagram | |
| 62. |
How might an extreme value in the sample data set affect the value of the mean |
| A. | an extreme value cannot affect the mean if it is close to the mean |
| B. | all values are treated equally when determining the mean, so an extreme value cannot affect it |
| C. | since all values are summed, any extreme value can influence the mean to a large extent |
| D. | one extreme value is still only one value, so it cannot affect the mean very much |
| Answer» C. since all values are summed, any extreme value can influence the mean to a large extent | |
| 63. |
Which of the following is not a measure of central tendency |
| A. | interquartile range |
| B. | median |
| C. | mode |
| D. | geometric mean |
| Answer» A. interquartile range | |
| 64. |
Which of the following is the most appropriate measure of central tendency for ordinal data |
| A. | coefficient of variation |
| B. | variance |
| C. | median |
| D. | mean |
| Answer» C. median | |
| 65. |
Which of the following measures of central tendency is not affected by extreme values in the sample data set |
| A. | mode |
| B. | median |
| C. | median and mode |
| D. | mean |
| Answer» A. mode | |
| 66. |
How many elements of a data set are between the first and third quartiles |
| A. | one half |
| B. | one third |
| C. | one fourth |
| D. | three fourths |
| Answer» A. one half | |
| 67. |
Which of the following measures become larger as the data is more dispersed |
| A. | median and range |
| B. | mean, variance, and standard deviation |
| C. | mean and median |
| D. | range, variance, and standard deviation |
| Answer» D. range, variance, and standard deviation | |
| 68. |
The sum of deviations about the arithmetic mean is always equal to _______ |
| A. | 1 |
| B. | 0 |
| C. | variance |
| D. | geometric mean |
| Answer» B. 0 | |
| 69. |
How is the arithmetic mean related to the variance |
| A. | variance has the square of the mean in its formula |
| B. | variance is not related to the mean, but standard deviation is |
| C. | variance measures the variability of values about the mean |
| D. | they are not related. one is a measure of central tendency, and the other is a measure of |
| Answer» C. variance measures the variability of values about the mean | |
| 70. |
Which of the following sampling techniques will not result in a probability sample? |
| A. | stratified |
| B. | quota |
| C. | random |
| D. | systematic |
| Answer» B. quota | |
| 71. |
The standard deviation of a sampling distribution is commonly called which of the following |
| A. | sampling deviation |
| B. | standard margin |
| C. | standard error |
| D. | statistical range |
| Answer» C. standard error | |
| 72. |
Which of the following techniques yields a simple random sample |
| A. | choosing volunteers from an introductory psychology class to participate |
| B. | listing the individuals by ethnic group and choosing a proportion from within each ethnic group at random |
| C. | numbering all the elements of a sampling frame and then using a random number table to pick cases from the table |
| D. | randomly selecting schools, and then sampling everyone within the school |
| Answer» C. numbering all the elements of a sampling frame and then using a random number table to pick cases from the table | |
| 73. |
People who are available, volunteer, or can be easily recruited are used in the sampling method called ______ |
| A. | simple random sampling |
| B. | cluster sampling |
| C. | systematic sampling |
| D. | convenience sampling |
| Answer» D. convenience sampling | |
| 74. |
Which of the following types of sampling involves the researcher determining the appropriate sample sizes for the groups identified as important, and then taking convenience samples from those groups |
| A. | proportional stratified sampling |
| B. | quota sampling |
| C. | one-stage cluster sampling |
| D. | two-stage cluster sampling |
| Answer» B. quota sampling | |
| 75. |
In which of the following nonrandom sampling techniques does the researcher ask the research participants to identify other potential research participants |
| A. | snowball |
| B. | convenience |
| C. | purposive |
| D. | quota |
| Answer» A. snowball | |
| 76. |
The type of sampling in which each member of the population selected for the sample is returned to the population before the next member is selected is called _________ |
| A. | sampling without replacement |
| B. | sampling with replacement |
| C. | simple random sampling |
| D. | systematic sampling |
| Answer» B. sampling with replacement | |
| 77. |
Which of the following is not a type of nonrandom sampling |
| A. | cluster sampling |
| B. | convenience sampling |
| C. | quota sampling |
| D. | purposive sampling |
| Answer» A. cluster sampling | |
| 78. |
___________ is a set of elements taken from a larger population according to certain rules |
| A. | sample |
| B. | population |
| C. | statistic |
| D. | element |
| Answer» A. sample | |
| 79. |
Questionnaires can address events and characteristics taking place ______ |
| A. | in the past (retrospective questions) |
| B. | in the present (current time questions) |
| C. | in the future (prospective questions) |
| D. | all of the above |
| Answer» D. all of the above | |
| 80. |
Which of the following terms best describes data that were originally collected at an earlier time by a different person for a different purpose |
| A. | primary data |
| B. | secondary data |
| C. | experimental data |
| D. | field notes |
| Answer» B. secondary data | |
| 81. |
Which of the following is true concerning observation method of data collection |
| A. | it takes less time than self-report approaches |
| B. | it costs less money than self-report approaches |
| C. | it is often not possible to determine exactly why the people behave as they do |
| D. | all of the above |
| Answer» C. it is often not possible to determine exactly why the people behave as they do | |
| 82. |
Correlation refers to |
| A. | the causal relationship between two variables |
| B. | the association between two variables |
| C. | the proportion of variance that two variables share |
| D. | a statistical method that can only be used with a correlational research design |
| Answer» B. the association between two variables | |
| 83. |
If two variables are highly correlated, what do you know |
| A. | that they always go together |
| B. | that high values on one variable lead to high values on the other variable |
| C. | that there are no other variables responsible for the relationship |
| D. | that changes in one variable are accompanied by predictable changes in the other |
| Answer» D. that changes in one variable are accompanied by predictable changes in the other | |
| 84. |
A researcher finds a correlation of 0.40 between personal income and the number of years of college completed. Based upon this finding he can conclude that |
| A. | a person who attended four years of college will have an annual income of rs. 40,000 |
| B. | more years of education causes higher income |
| C. | personal income is a positively skewed variable |
| D. | more years of education are associated with higher income |
| Answer» D. more years of education are associated with higher income | |
| 85. |
Which of the following would not allow you to calculate a correlation? |
| A. | a negative relationship between x and y |
| B. | a positive relationship between x and y |
| C. | a curvilinear relationship between x and y |
| D. | a linear relationship between x and y |
| Answer» C. a curvilinear relationship between x and y | |
| 86. |
Correlation relates the relative position of a score in one distribution to |
| A. | the relative position of a score in another distribution |
| B. | the mean of the z-scores from another distribution |
| C. | the total variance of all scores in both distributions |
| D. | the standard deviation of the z-scores for both distributions |
| Answer» A. the relative position of a score in another distribution | |
| 87. |
If a positive correlation exists between height and weight, a person with above average height is expected to have above average weight |
| A. | true |
| B. | false |
| C. | insufficient information to draw a conclusion |
| D. | all of the above |
| Answer» A. true | |
| 88. |
Regression analysis: |
| A. | measures the demand for a good |
| B. | measures growth |
| C. | establishes cause and effect |
| D. | establishes a relationship between two variables |
| Answer» D. establishes a relationship between two variables | |
| 89. |
In the equation of a straight line, Y = mX + c the term, m is the: |
| A. | independent variable |
| B. | intercept |
| C. | dependent variable |
| D. | slope |
| Answer» D. slope | |
| 90. |
In the equation of a straight line, Y = mX + c , if c is equal to zero then: |
| A. | the line of best fit passes through the origin |
| B. | the line of best fit cuts the x axis to the right of the y axis |
| C. | does not cross the x axis |
| D. | the line of best fit cuts the x axis to the left of the y axis |
| Answer» A. the line of best fit passes through the origin | |
| 91. |
In the equation of a straight line, Y = mX + c , if m is equal to −2 then: |
| A. | there is a positive relationship between the two variables |
| B. | there is no relationship between the two variables |
| C. | there is a negative relationship between the two variables |
| D. | the relationship between the two variables is perfect |
| Answer» C. there is a negative relationship between the two variables | |
| 92. |
In the equation of a straight line, Y = mX + c , if m is equal to zero then when: |
| A. | x increases y decreases |
| B. | y increases x increases |
| C. | x increases y increases |
| D. | x increases y remains constant |
| Answer» D. x increases y remains constant | |
| 93. |
If the Pearson correlation co-efficient R is equal to 1 then: |
| A. | there is a perfect positive relationship between the two variables |
| B. | there is a positive relationship between the two variables |
| C. | there is no relationship between the two variables |
| D. | there is a negative relationship between the two variables |
| Answer» A. there is a perfect positive relationship between the two variables | |
| 94. |
The mathematical notation R2 is for: |
| A. | the co-efficient of determination |
| B. | the co-efficient of variation |
| C. | spearman’s co-efficient of rank correlation |
| D. | pearson’s co-efficient of correlation |
| Answer» A. the co-efficient of determination | |
| 95. |
If the slope of the regression line is calculated to be 2.5 and the intercept 16 then the value of Y when X is 4 is: |
| A. | 16 |
| B. | 66.5 |
| C. | 2.5 |
| D. | 26 |
| Answer» D. 26 | |
| 96. |
If Spearman’s co-efficient of rank correlation is equal to one, then: |
| A. | all the ‘total variation’ is ‘explained’ by the regression line |
| B. | the rankings of the two variables partially agree |
| C. | the rankings of the two variables is totally different |
| D. | the rankings of the two variables totally agree |
| Answer» D. the rankings of the two variables totally agree | |
| 97. |
The correlation coefficient is used to determine: |
| A. | a specific value of the y-variable given a specific value of the x-variable |
| B. | a specific value of the x-variable given a specific value of the y-variable |
| C. | the strength of the relationship between the x and y variables |
| D. | none of these |
| Answer» C. the strength of the relationship between the x and y variables | |
| 98. |
If there is a very strong correlation between two variables then the correlation coefficient must be |
| A. | any value larger than 1 |
| B. | much smaller than 0, if the correlation is negative |
| C. | much larger than 0, regardless of whether the correlation is negative or positive |
| D. | none of these alternatives is correct |
| Answer» B. much smaller than 0, if the correlation is negative | |
| 99. |
In regression, the equation that describes how the response variable (y) is related to the explanatory variable (x) is: |
| A. | the correlation model |
| B. | the regression model |
| C. | used to compute the correlation coefficient |
| D. | none of these alternatives is correct |
| Answer» B. the regression model | |
| 100. |
Regression modelling is a statistical framework for developing a mathematical equation that describes how |
| A. | one explanatory and one or more response variables are related |
| B. | several explanatory and several response variables response are related |
| C. | one response and one or more explanatory variables are related |
| D. | all of these are correct |
| Answer» C. one response and one or more explanatory variables are related | |
Done Studing? Take A Test.
Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.