Skip to content

Course home

2.2 Data Presentation and Interpretation

2.2 Data Presentation and Interpretation

EasyMediumHard
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253
Question 41

Using the 184 LDS9 records for which both waist circumference and BMI are available, software gives the regression model

b=0.337w−4.63b=0.337w-4.63b=0.337w−4.63,

where w w\,w is waist circumference in cm and b b\,b is BMI. The correlation coefficient is 0.878.

a.

Interpret the gradient of the regression line in context.

[2]
b.

Estimate the BMI of an individual whose waist circumference is 90 cm.

[1]
c.

State what the value 0.878 suggests about the scatter diagram.

[1]
Markscheme

2.2 Data Presentation and Interpretation Questions

  1. A Level
  2. /Maths
  3. /2.2 Data Presentation and Interpretation

121 exam-style questions on OCR (MEI) A Level Maths 2.2 Data Presentation and Interpretation, covering 2.2.1 Types of data and standard diagrams, 2.2.2 Area in a histogram is proportional to frequency, 2.2.3 Cumulative frequency diagram, 2.2.4 Describe frequency distributions, 2.2.5 Samples and theoretical distributions, 2.2.6 Interpret a scatter diagram, 2.2.7 Distinct sections and outliers in scatter diagrams, 2.2.8 Correlation and causation, 2.2.9 Select or critique data presentation techniques, 2.2.10 Measures of central tendency, 2.2.11 Simple measures of spread, 2.2.12 Variance and standard deviation, 2.2.13 Outliers, 2.2.14 Cleaning data, and 2.2 Data Presentation and Interpretation. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank