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WorksheetsSTA108: Tutorial 1
Total questions: 50
Worksheet time: 26mins
Which of the following results in categorical data?
Measuring in litres the petrol tank capacity of cars.
Counting the number of cars that pass through a toll-booth.
Counting the number of red cars, white cars and blue cars in a large parking site.
T-shirt classified into large, medium or small.
Which of the following results in numerical data?
Respondents asked if they prefer to have white hair, black hair or brown hair.
T-shirt classified into large, medium or small
Types of hair cream used by students in a school.
Counting the number of cars that pass through a toll-booth.
State whether each of the following statements is TRUE or FALSE
A study of statistics can be divided into two sections: qualitative and quantitative methods.
TRUE
FALSE
State whether each of the following statements is TRUE or FALSE
Inferential statistics consists of methods dealing with collection, tabulation, summarization and presentation of data.
TRUE
FALSE
State whether each of the following statements is TRUE or FALSE
Ordinal scales permits comparisons of scores or categories in terms of smaller or larger, higher or lower ,or, best or worst
TRUE
FALSE
State whether each of the following statements is TRUE or FALSE
Cumulative Grade Point Average (CGPA) score of a student is a qualitative variable and its level of measurement is an ordinal scale.
TRUE
FALSE
State whether each of the following statements is TRUE or FALSE
Rating of speakers as excellent, good, average or poor is an ordinal scale of measurement.
TRUE
FALSE
Classify the statement below according to its level of measurement.
Rating of movies as 1 star,2 stars,3 stars,4 stars and 5 stars.
Nominal
Ordinal
Interval
Ratio
Classify the statement below according to its level of measurement.
Classification of automobiles as subcompact, compact, standard and luxury.
Nominal
Ordinal
Interval
Ratio
Classify the statement below according to its level of measurement.
Number of cups of coffee served at a restaurant.
Nominal
Ordinal
Interval
Ratio
Problems present a statistical study.Identify the parameter.
A researcher wants to estimate the average height of women aged 20 years or older. From a simple random sample of 45 women, the researcher obtains a sample mean height of 63.9 inches.
The average height of all women aged 20 years or older.
The average height of 63.9 inches from the sample of 45 women.
A researcher wants to estimate the average farm size in Changloon,Perlis. From a simple random sample of 40 farms, the researcher obtains a sample mean farm size of 731 acres.
Identify the statistic in this study?
The average farm size in Changloon,Perlis.
The mean farm size of 731 acres from the sample of 40 farms.
A ________________ is a numerical value that states something about the entire population being studied.
statistic
statistics
parameter
census
Looking at the table above, what type of scale is 'Education'?
Nominal
Ordinal
Interval
Ratio
Looking at the data listed under the Position variable, why would the Position variable be considered a nominal variable?
The label describes the position by name.
The label lists the positions in order.
The label ranks the positions.
The label rates the positions.
Which of the following is a qualitative variable?
Marital status
Gross wages
Number of days of training attended last year
Weight of the pineapple to be sold
Suppose a database on companies contain the following four variables:
Industry
Number of employees
Number of job vacancies
Union status
You were asked to compute the mean value of these variables, where possible. What is the number of variables for which the mean can be computed meaningfully?
1
2
3
4
Which one of these sampling method is a probability sampling?
Quota sampling
Judgemental sampling
Stratified sampling
Convenience sampling
Which ONE of the following is the benefits of using Simple Random Sampling
We can calculate the accuracy of the result
The result are always representative
Interviewer can choose respondents freely
respondent can refuse to participate
You wish to do a comparison study between two hospital's success rates. Instead of assigning patients to go to one or the other, you divide your sample into two groups and randomly sample based upon which hospital individuals attend for treatment. Which type of sampling are you using?
Simple random sampling
Stratified random sampling
Cluster random sampling
Systematic random sampling
You are given a random list of all graduating seniors at the university. You decide to survey every five names on the list and ask what types of activities they participated in while they were at the university. This is an example of _________ sampling.
Simple random sampling
Stratified random sampling
Cluster random sampling
Systematic random sampling
Principal Azizah's school has 2,000 elementary children. She wants to obtain information from parents regarding school homework policies in order to make decisions about future school policy.
What is the target population in her study?
Children in her school
Parents of children in her school
Elementary children in her district
Parents of elementary children in the nation
Population generalization refers to
the degree to which a sample represents the population of interest
conclusion researchers make about a random sample
the degree to which results of a study can be extended to other settings or conclusion.
conclusion researchers make about information in a research study
A researcher who wanted to determine the benefits of using a new algebra study technique obtained permission from a school district to select 50 high school students. The researcher selected 50 students at random. The researcher selected 25 of these 50 students to participate in the new study program. The researcher gave a training session on traditional study techniques to the other 25 students and asked them to use these methods.
The most likely target population in this study is ______.
Algebra students in the district
All students in the district
All algebra students
The 25 students who learned the new study technique.
A researcher who wanted to determine the benefits of using a new algebra study technique obtained permission from a school district to select 50 high school students. The researcher selected 50 students at random. The researcher selected 25 of these 50 students to participate in the new study program. The researcher gave a training session on traditional study techniques to the other 25 students and asked them to use these methods.
The method of sampling used in the study is.
Simple random sampling
Stratified random sampling
Cluster random sampling
Convenience sampling
To use systematic random sampling, you must first create a list of your population, and then:
Select an interval
Select a beginning number
Put all names in a hat
Create a list of employees
Which is a sampling method that involves separating the population into groups, and then selecting random samples from each of the group?
Simple random sampling
Cluster sampling
Stratified samplng
systematic sampling
____________________ is the process whereby some elements (individuals) in the population are selected for a research study.
Statistics
Descriptive statistics
Sampling
Census
“Places from where students are travelling to take a statistics course” is an example of which scale of measurement?
Interval
Ratio
Nominal
None
“Students’ scores on a biology test” is an example of which scale of measurement?
Ratio
Interval
Nominal
None
“Number of cars” is an example of which scale of measurement?
Ratio
Interval
Ordinal
None
Calender year is an example of what scale of measurement?
Interval
Ratio
Nominal
None
Your age is an example of which scale of measurement?
Interval
Ratio
Nominal
None
Country of your birth is an example of which scale of measurement?
Interval
Nominal
Ratio
None
Years of schooling completed
A sample refers to _____________ of a population.
a subset
a list
a description
a collection
_________________________ involves the use of numbers to rank or order scores from high to low
ordinal scale
ratio scale
nominal scale
interval scale
“Number of cars” is an example of which scale of measurement?
Ratio
Interval
Ordinal
None
Arranging the shirt sizes as small, medium and large is an example of which scale of measurement?
Nominal
Ordinal
Ratio
None
Categorizing the level of satisfaction of a book store as "not happy, happy, very happy," is an example of which scale of measurement?
Nominal
Interval
Ratio
None
Hours Studying
