Grade 9 · Math
Probability and Statistics
8 featured printable worksheets.
Worksheets
Bivariate Data Analysis Worksheet
This worksheet focuses on understanding and analyzing bivariate data, including scatter plots, correlation, and lines of best fit.
Grade 9 Math: Understanding Variance
This worksheet focuses on understanding and calculating variance for grade 9 students, covering definitions, formulas, and practical applications.
Standard Deviation Worksheet
Explore standard deviation with this Grade 9 math worksheet, covering calculations, interpretation, and application to data sets.
Grade 9 Chi-Square Test Worksheet
This worksheet provides exercises on the Chi-Square test, covering concepts like null hypotheses, degrees of freedom, and calculating the chi-square statistic for categorical data.
Grade 9 Math: Introduction to Regression
This worksheet introduces Grade 9 students to the concept of regression, focusing on identifying relationships between variables, drawing lines of best fit, and making predictions.
Statistical Questions Worksheet
A Grade 9 math worksheet focused on identifying and formulating statistical questions, distinguishing them from non-statistical questions, and understanding data variability.
Measures of Center Worksheet
Explore mean, median, and mode with this Grade 9 math worksheet on measures of center.
Grade 9 Population Calculation Worksheet
This worksheet covers population calculation concepts for Grade 9 students, including growth rates, density, and basic demographic analysis.
Other Math topics
Choosing a Grade 9 statistics worksheet
Start with statistical questions, measures of center, and relative frequency. Move to scatter plots and lines of best fit once students can read axes and explain variation. Grade labels are a starting point: check your local syllabus before assigning conditional probability, variance, or chi-square activities.
Worked example: experimental probability
A spinner lands on blue 18 times in 60 spins. The relative frequency of blue is 18 ÷ 60 = 0.3, or 30%. This is an estimate from the experiment; it does not prove the spinner's theoretical probability is exactly 30%.
A short lesson sequence
- Ask students to identify the outcome being counted and the total number of trials.
- Have them express the relative frequency as a fraction, decimal, and percentage.
- Compare results from two groups and discuss why samples can differ.
Check understanding: If blue appears 7 times in 20 more spins, combine the counts before dividing: (18 + 7) ÷ (60 + 20) = 31.25%. Do not simply average the two percentages because the sample sizes differ.