Census vs Sample
The type of survey where everyone in the targeted group is asked for their opinion.
Census survey
A question type with fixed, limited choices (such as Yes/No or specific options).
Closed question
The software tool commonly used to store, organize, and run mathematical formulas on collected survey rows and columns.
Spreadsheet
The circular graph best suited for showing percentages or proportions of a whole (like proportions of favorite snacks).
Sector/pie graph
The mode of the data set: 4, 7, 7, 9, 12
7
The type of survey used when only a portion of the population is asked, such as surveying 5 students from each year group.
Sample
The question type used when asking: "Where would you like to go for the school camp?"
Open question.
An organised list or table that defines and stores data entries so that they can be read easily.
Data dictionary.
A plot that uses dots above a number line to show frequency and distribution.
Dot plot
The mean of the test scores: 5, 8, 9, 10
8 (32 divided by 4)
True or False: Asking all 5 children in a single family where to go on holiday is an example of a sample survey.
False.
The best question format if a school wants students to choose between blue, brown, green, or grey for a uniform
Multi-choice.
True or False: A spreadsheet can automatically generate graphs and charts once your survey data is typed into it.
True
The display tool that uses connected line segments across time, ideal for tracking continuous change.
Line graph
The median of the numbers: 12, 3, 19, 7, 15
12 (sorted: 3,7, 12, 15,19)
A car manufacturer wanting to gauge public opinion on five new car colours should use this survey method.
Sample
Why asking an open question to decide a class performance item might cause problems for the organiser.
Because it will result in too many different, unstructured ideas to easily organise.
In a standard spreadsheet table, data is arranged horizontally in rows and vertically in these.
Columns (I will accept cells).
A graph featuring touching bars, used to display continuous numerical data grouped into interval ranges.
Histogram
The range of the shoe sizes: 4, 6, 8, 11
7 (11-4)
The main reason a census survey is usually inappropriate for surveying an entire school's student body on multiple detailed physical measurements.
Because it takes too much time/effort to collect and process data from every single student.
When testing reaction time by dropping and catching a ruler, a key factor that must be kept consistent for it to be a fair test.
Dropping the ruler from the exact same height/position without warning.
The formula to add two sets of data from A1 and B1 together on a spreadsheet.
=SUM(A1, B1)
The type of graph that uses horizontal line steps with open and closed circles to show constant values over intervals.
Step graph
The mean of the data set: 4, 6, 7, 8
6.25 (Sum is 25; 25 divided by 4 = 6.25)