Statistics for Year 5: Learn Data Handling Skills Online

Question 1

Scientists make predictions using a special type of guess. What is this guess called?

Accepted Answer

Hypothesis

Answer

Fact

Answer

Theory

Answer

Law

Question 2

A newspaper article says a new learning program has improved students' test scores. What information do you need to know before deciding if this is true?

Accepted Answer

How many students were tested

Accepted Answer

What kind of information was collected

Accepted Answer

How the results were gathered

Answer

The education level of the researchers

Question 3

In a survey, 100 children from a school were asked about their daily TV viewing hours. What do we call the entire group of children in the school and the group of 100 children surveyed?

Accepted Answer

Population: All children in the school; Sample: 100 children surveyed

Answer

Population: 100 children surveyed; Sample: All children in the school

Answer

Population: All children who watch TV; Sample: 100 children surveyed

Answer

Population: The survey; Sample: 100 children surveyed

Question 4

When using technology in statistics, which of these is a limitation?

Accepted Answer

Completely avoiding errors

Answer

Collecting data quickly

Answer

Analyzing data precisely

Answer

Representing data clearly

Question 5

Which of the following is an example of a categorical variable?

Accepted Answer

Hair color

Answer

Height

Answer

Weight

Answer

Age

Question 6

Which of these is a way of measuring how scattered data is?

Accepted Answer

Range

Answer

Mean

Answer

Median

Answer

Mode

Question 7

Which of the following is NOT a type of probability?

Accepted Answer

Impossible

Answer

Theoretical

Answer

Experimental

Answer

Subjective

Question 8

Which of the following is most easily affected by extreme values in a dataset?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Question 9

A box plot shows that the upper half of the data is much larger than the lower half. This indicates that the data has...

Accepted Answer

A high degree of skewness

Answer

A low degree of skewness

Answer

No skewness

Question 10

What's the difference between the mean and the median?

Accepted Answer

The mean is the average, and the median is the middle value.

Answer

The median is the average, and the mean is the middle value.

Answer

The mean and the median are always the same.

Answer

The mean is only used for numbers, while the median can be used for anything.

Question 11

What is the purpose of a histogram?

Accepted Answer

To show the spread of continuous data

Answer

To show data changing over time

Answer

To compare different groups of data

Answer

To show the relationship between two variables

Question 12

What's the difference between a population and a sample?

Accepted Answer

A population is all the data, while a sample is a smaller group.

Answer

A sample is all the data, while a population is a smaller group.

Answer

A population and a sample are always the same thing.

Answer

A population is only used for numbers, while a sample can be used for anything.

Question 13

What does the range of a set of data tell us?

Accepted Answer

The difference between the largest and smallest numbers

Answer

The average value of all the numbers

Answer

The most common number in the set

Answer

Total number of values in the set

Question 14

The average of a set of numbers is 5. What does this mean?

Accepted Answer

The average value is 5.

Answer

The sum of the numbers is 5.

Answer

Most numbers are close to 5.

Answer

Half of the numbers are greater than 5.

Question 15

Which measure of central tendency is most affected by extreme values in the data?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Answer

Range

Question 16

A survey asks students to rate their favorite subject on a scale of 1 to 5. What type of data is being collected?

Accepted Answer

Interval

Answer

Categorical

Answer

Numerical

Answer

Continuous

Question 17

Which of these is not a way to measure how spread out data is?

Accepted Answer

Mean

Answer

Range

Answer

Standard deviation

Answer

Variance

Question 18

What is a characteristic of a misleading graph?

Accepted Answer

It makes data look more extreme than it is

Answer

It presents data accurately

Answer

It uses difficult language

Answer

It is not colorful enough

Question 19

Which of these graphs is best for showing how spread out data is?

Accepted Answer

Histogram

Answer

Bar chart

Answer

Pie chart

Answer

Scatter plot

Question 20

You have a list of numbers, and one of them is much larger than the rest. Which measure of central tendency would be most affected by this large number?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Question 21

What type of chart shows changes over time?

Accepted Answer

Line graph

Answer

Bar chart

Answer

Pie chart

Answer

Scatter plot

Question 22

The average height of children in a class is 1.5 meters. Which of the following is probably NOT the height of a child in the class?

Accepted Answer

2.1 meters

Answer

1.2 meters

Answer

1.5 meters

Answer

1.8 meters

Question 23

Which data set has the greatest median?

Accepted Answer

{3, 5, 7, 9, 11}

Answer

{1, 3, 5, 7, 9}

Answer

{2, 4, 6, 8, 10}

Answer

{4, 6, 8, 10, 12}

Question 24

What is a method of collecting data by asking people questions?

Accepted Answer

Survey

Answer

Experiment

Answer

Interview

Answer

Observation

Question 25

Which type of graph is best to show how something changes over time?

Accepted Answer

Line graph

Answer

Bar graph

Answer

Pie chart

Answer

Scatterplot

Question 26

Which of these measures describes the middle value of a dataset?

Accepted Answer

Median

Answer

Range

Answer

Mean

Answer

Mode

Question 27

What is the difference between a set of all the data and a part of the data?

Accepted Answer

A population is the entire group, while a sample is a subset of the group.

Answer

A population is a group of people, while a sample is a group of objects.

Answer

A sample is the entire group, while a population is a subset of the group.

Question 28

What is a type of error in statistics due to not choosing a fair sample?

Accepted Answer

Selection bias

Answer

Sampling error

Answer

Measurement error

Answer

Response bias

Question 29

What is the purpose of a prediction based on a sample in statistics?

Accepted Answer

To estimate the truth about a larger group.

Answer

To describe a dataset

Answer

To prove a theory

Question 30

What does the p-value in a statistical test represent?

Accepted Answer

The chance of getting the results we did if the common guess was correct.

Answer

The chance of the alternative guess being correct.

Answer

The chance of the common guess being correct.

Question 31

What is an advantage of using statistics?

Accepted Answer

It helps us make better choices.

Answer

It is required by law

Answer

Makes us look smarter

Answer

Makes math more fun

Question 32

Which of the following is NOT a common type of graph used to present data?

Accepted Answer

Square

Answer

Line graph

Answer

Pictogram

Answer

Bar chart

Question 33

What is the main purpose of using a pie chart?

Accepted Answer

To show the proportion or percentage of each category in a dataset.

Answer

To compare multiple datasets.

Answer

To display changes in data over time.

Question 34

Which of the following is NOT a measure of central tendency?

Accepted Answer

Range

Answer

Median

Answer

Mean

Answer

Mode

Question 35

What is the median of the following set of numbers: 2, 5, 7, 9, 11?

Accepted Answer

7

Answer

11

Answer

9

Answer

5

Question 36

Which of the following is NOT a valid sampling method?

Accepted Answer

Convenience sampling

Answer

Systematic sampling

Answer

Stratified sampling

Answer

Random sampling

Question 37

What is the primary purpose of creating a frequency table?

Accepted Answer

To organize and display the frequency of different values or categories within a dataset.

Answer

To calculate the mean of a dataset.

Answer

To determine the median of a dataset.

Question 38

What is the key difference between a population and a sample in statistics?

Accepted Answer

A population refers to the entire group being studied, while a sample is a smaller subset selected to represent the population.

Answer

A population is the average value of a dataset, while a sample is the sum of a dataset.

Question 39

What is the best method to gather information about the preferred colors of students in a class?

Accepted Answer

Conduct a survey

Answer

Examine the colors of their clothing

Answer

Consult the teacher

Answer

Rely on personal judgment

Question 40

The following data represents the number of goals scored by a football team in their last five matches: 2, 3, 4, 5, 6. What is the average number of goals scored?

Accepted Answer

4

Answer

6

Answer

3

Answer

5

Question 41

Which of the following is NOT a measure of variability?

Accepted Answer

Mean

Answer

Range

Answer

Standard deviation

Answer

Variance

Question 42

A data set has a range of 10. What does this indicate?

Accepted Answer

The difference between the highest and lowest values is 10.

Answer

The average value is 10.

Answer

The median value is 10.

Question 43

Which statistical test is most suitable for comparing the central tendencies of two different data sets?

Accepted Answer

T-test

Answer

Median

Answer

Mean

Answer

Mode

Question 44

A scatter plot is used to show:

Accepted Answer

The relationship between two variables

Answer

The frequency of different values

Answer

The distribution of a single variable

Question 45

What is the primary purpose of a histogram?

Accepted Answer

To show the frequency of different values in a data set

Answer

To show the relationship between two variables

Answer

To show the mean and standard deviation of a data set

Question 46

Which measure of central tendency is easily affected by extreme values in a data set?

Accepted Answer

Mean

Answer

Range

Answer

Mode

Answer

Median

Question 47

In a survey, 60% of 100 students said they like chocolate ice cream. How many students like chocolate ice cream?

Accepted Answer

60

Answer

100

Answer

40

Answer

80

Question 48

What is the primary purpose of a stem-and-leaf plot?

Accepted Answer

To display the distribution of data.

Answer

To compare two data sets.

Answer

To find the mode.

Answer

To calculate the mean.

Question 49

Which of the following is an example of a continuous variable?

Accepted Answer

Height

Answer

Gender

Answer

Number of siblings

Answer

Eye color

Question 50

Explain the difference between a population and a sample.

Accepted Answer

A population is the entire group of individuals being studied, while a sample is a smaller set of individuals chosen to represent the population.

Answer

A population is smaller than a sample.

Question 51

Which of these is NOT a way to collect information for statistics?

Accepted Answer

Guessing

Answer

Asking questions

Answer

Observing

Answer

Taking a survey

Question 52

What's the best way to organize information to make it easy to understand?

Accepted Answer

Using a table or chart

Answer

Writing it in a list

Answer

Coloring it in different colours

Answer

Putting it in a random order

Question 53

What does a bar chart show us?

Accepted Answer

How many times each value appears

Answer

The biggest and smallest values

Answer

The average value

Question 54

What is a measure that tells us about the center of a set of data?

Accepted Answer

Mean

Answer

Standard deviation

Answer

Range

Question 55

What's the difference between a population and a sample in statistics?

Accepted Answer

A population is all the data, while a sample is just a part of the data.

Answer

A population is a group of people, while a sample is a group of things.

Answer

A sample is all the data, while a population is just a part of the data.

Question 56

What is the mode in the set of numbers: 5, 7, 9, 9, 11?

Accepted Answer

9

Answer

11

Answer

7

Answer

5

Question 57

What is the mean (average) of these numbers: 2, 4, 6, 8, 10?

Accepted Answer

6

Answer

10

Answer

4

Answer

8

Question 58

Which of these is NOT a type of information we use in statistics?

Accepted Answer

Opinion

Answer