End of Term 2 Revision Units 6 and 16

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End of Term 2 Revision Units 6 and 16

Which of the following is NOT an example of discrete data?

A

Number of books on a shelf

B

Time in hours and minutes

C

Number of cars in a parking lot

D

Number of goals scored in a match

What type of data is counted in distinct and separate units?

A

Continuous data

B

Discrete data

C

Categorical data

D

Ordinal data

Which of the following is an example of discrete data?

A

Height of a person

B

Weight of a fruit

C

Temperature in degrees Celsius

D

Number of students in a class

Which of the following is an example of continuous data?

A

Types of fruits in a basket

B

Number of cars in a parking lot

C

Number of students in a class

D

Weight of a person

In statistics, continuous data can take on any value within a given _____________.

A

Group

B

Range

C

Category

D

Cluster

Which of the following is not an example of continuous data?

A

Height of a building

B

Time taken to complete a race

C

Number of siblings

D

Temperature in degrees Celsius

What is categorical data?

A

Data that is not useful for analysis

B

Data that can be divided into categories

C

Data that is continuous and uncountable

D

Data that is only numerical

Which of the following is an example of categorical data?

A

Temperature in degrees

B

Height in centimeters

C

Annual income in dollars

D

Eye color

How is categorical data different from numerical data?

A

Numerical data is easier to analyze

B

Numerical data is more accurate

C

Categorical data cannot be graphed

D

Categorical data represents characteristics or qualities

What type of chart is commonly used to represent categorical data?

A

Bar chart

B

Line graph

C

Histogram

D

Scatter plot

What is random sampling?

A

A method where the researcher selects members based on their availability.

B

A method where each member of the population has an equal chance of being selected.

C

A method where the researcher selects the most convenient members of the population.

D

A method where the researcher selects members based on their characteristics.

What is a method of data collection that involves asking a series of questions to gather information?

A

Surveys

B

Questionnaires

C

Interviews

D

Experiments

Which method of data collection involves gathering information by observing subjects in a controlled environment?

A

Questionnaires

B

Experiments

C

Interviews

D

Surveys

What is a systematic way of gathering information from individuals by asking questions and recording their responses?

A

Questionnaires

B

Surveys

C

Experiments

D

Interviews

Which of the following is a structured set of questions designed to gather information from a sample of people?

A

Experiments

B

Interviews

C

Questionnaires

D

Survey

What is a research method used to investigate relationships between variables by manipulating one variable while controlling others?

A

Experiment

B

Interview

C

Questionnaire

D

Survey

Which of the following is a common method to record data?

A

Filling out forms

B

Sending emails

C

Using spreadsheets

D

Making phone calls

What is the purpose of recording data accurately?

A

Ensuring data integrity

B

Improving internet speed

C

Increasing storage capacity

D

Facilitating analysis

What type of chart is best for showing the change in temperature over a week?

A

Bar chart

B

Pie chart

C

Tally chart

D

Line graph

What is the best way to record the number of cars passing by every hour?

A

Histogram

B

Bar chart

C

Tally chart

D

Line graph

How would you represent the number of books read by each student in a class?

A

Line graph

B

Bar chart

C

Tally chart

D

Frequency polygon

What is an advantage of a large sample size?

A

Decreased diversity of data

B

Higher cost of data collection

C

Increased precision in estimating population parameters

D

Reduced statistical power

Which is a disadvantage of a small sample size?

A

Lower risk of sampling error

B

Greater variability in estimates of population parameters

C

Faster data analysis

D

Easier data management

What is a potential drawback of a large sample size?

A

Decreased precision

B

Higher cost and time for data collection

C

Lower confidence in results

D

Reduced data complexity

Why might a small sample size be advantageous?

A

Increased precision

B

Higher statistical power

C

Lower cost and time for data collection

D

Enhanced generalizability

What is a two-way table used for?

A

Creating line graphs

B

Organizing categorical data into rows and columns

C

Calculating mean and median

D

Plotting scatter plots

What kind of data is typically organized in a two-way table?

A

Categorical data

B

Textual data

C

Continuous data

D

Qualitative data

What is the middle value in a set of numbers?

A

Mode

B

Range

C

Mean

D

Median

Which measure of central tendency is affected by extreme values?

A

Mode

B

Range

C

Median

D

Mean

What is the most frequently occurring value in a set of numbers?

A

Mean

B

Median

C

Mode

D

Range

What measures the spread of a set of numbers?

A

Median

B

Mode

C

Range

D

Mean

If a set of numbers has two middle values, what should be calculated?

A

Mean

B

Range

C

Median

D

Mode

What is the value of the mean in the following data set: 5, 7, 9, 11, 13?

A

9

B

7

C

13

D

11

Determine the median of the data set: 4, 7, 9, 12, 15, 20, 25

A

20

B

15

C

9

D

12

What is the mode of the following data set: 3, 5, 5, 7, 8, 9?

A

8

B

7

C

3

D

5

Find the range of the data set: 10, 15, 20, 25, 30, 35, 40

A

25

B

15

C

30

D

20

Calculate the mean of the following data set: 2, 4, 6, 8, 10, 12

A

7

B

8

C

10

D

4