WorksheetsYear 9 Unit 3
Total questions: 20
Worksheet time: 10mins
What are averages used for in data analysis?
To find the most extreme value
To measure the central tendency or typical value of a set of data
To calculate the total sum of a dataset
To arrange data in order
What is a bar chart?
A graph showing points connected by lines
A graph using bars to show frequencies, which can be vertical or horizontal
A circle divided into sectors
A graph showing data over time
What does continuous data mean?
Data that is counted and has a finite number of possible values
Data with an infinite number of possible values, such as temperature or time
Data that can be split into distinct categories
Data measured at a specific point in time
What is correlation in data analysis?
The total sum of data values
The relationship between the data and the mean
The strength of the relationship between two variables
The frequency of each data point
What is discrete data?
Data that can take on any value within a range
Data that is measured continuously
Data that is usually counted and has a finite number of possible values
Data that changes over time
What is a histogram used for?
To compare the distribution of continuous data
To represent grouped data with segments along the x-axis proportional to class intervals
To track changes in data over time
To display categorical data in bars
What does a line graph display?
The distribution of data in bars
A series of data points connected by lines to show trends
The relationship between two variables
The most frequent data points
How is the mean calculated?
By finding the middle value of a dataset
By adding all the data together and dividing by the number of data points
By selecting the most common data value
By finding the difference between the highest and lowest values
What is the median of a set of data?
The middle value when the data is arranged in numerical order
The most commonly occurring value
The average of the highest and lowest values
The range of the dataset
What does the mode refer to in data analysis?
The most commonly occurring value or class
The middle value of the data
The average of the dataset
The difference between the largest and smallest values
What is the range of a set of data?
The average of the values
The most frequent data point
The difference between the highest and lowest values
The total sum of the values
What does a scatter graph show?
The change in data over time
The relationship between two variables by plotting data points
The frequency of data points
The distribution of data in categories
What is a stem and leaf diagram?
A diagram used to show the distribution of data in categories
A diagram showing numerical data split into a 'stem' and 'leaf'
A graph with bars to show the frequency of data
A circle divided into sectors representing data values
What is an outlier in a dataset?
A value that represents the mean of the data
A value that does not fit the pattern of the data
A value that is the most frequent
A value located in the middle of the dataset
What is a composite bar chart used for?
Comparing the total values of different categories
Comparing features within a single bar
Showing a line graph over time
Displaying data in a pie chart
What is a time series graph used for?
Showing how data points change over time
Comparing different categories of data
Representing continuous data
Showing the distribution of data across different ranges
What does a pie chart represent?
Data arranged in bars
Data shown in sectors of a circle, with each sector representing a data category
The change in data over time
The relationship between two variables
What is the line of best fit in a scatter graph?
A line that connects all the data points
A straight line drawn through the middle of the points to show trends
A curved line that fits all points perfectly
A line that represents the highest value in the dataset
What is interpolation in data?
Estimating values that are outside the given range of data
Estimating values that are within the range of the given data
The calculation of the mean of a dataset
The identification of an outlier in the data
What is extrapolation in data?
Estimating values that are outside the range of the data
Estimating the mean value of the data
Estimating values that are within the range of the data
Calculating the mode of the dataset
