b) Civil engineers have developed a 3D model to predict the response of jointed concrete pavements to temperature variations. To check this model, they measured the change in traverse strain on six different occasions and compared this to the modelled values. The table below was obtained.

Change in Strain Date Field Measurement Modelled Measurement Jul 25 -58 -52 Aug 4 69 59 Aug 16 35 32 Sep 3 -32 -24 Oct 26 -40 -39 Nov 3 -83 -71

(i) Is this data paired by having a matching variable? Note: -(If you think this data has a 'matching variable', enter 1) -(If you think this data does NOT have a 'matching variable', enter 0)