A-Level MathematicsYear 2020Q2
8 Question 2 continued Juliana entered the data in Figure 3 in a spreadsheet and calculated the following least squares regression line for air temperature (Y ° C) on rate of snowy tree cricket’s chirp (X chirps per minute) in the form y = a + bx. y = 4.44 + 0.102x (d) Interpret, in context, the values of a and b in Juliana’s least squares regression line. (3) _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________
Paper Source:9ST0_03_que_20201024.pdf
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Exam Specification Info
This question is part of the UK A-Level Mathematics syllabus. In the actual exam, structured questions typically require linking specific keywords to gain full marks. Applaa helps you drill these topics.
Syllabus levelAdvanced Level (A-Level)
SubjectMathematics
Official MarksVariable (2–6 marks)