The data points are evenly distributed on both sided of the line of best fit. There seems to be no anomalous datas present as all the points lay relatively close to the line of best fit/curve.
For consistency results, the precautions taken are:
1. set small angle of oscillation because the oscillation equaitons are only valid for small angles due to its approximation used for derivaiton.
2. Start timing when oscialltion are steady because at instant timing begin the number of ocillationis zero not one.
3. ensure thta the sring is vertical by viewing distant vertical object, making sure that it always aligned parallel to the strings.
4. ensure that the rule is vertical by placing the set square right-angle to the table top against the rule.
5.attach the optical pin at_____, to act as a point to enable accurate reding to avoid parallex error.
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mass readings 3dp
mass of weighing bottle and?/g
mass os empty weighing bottle/g
mass of?/g

burette readings: dilution of FA3 2dp
Final burette reading/cm3
initial burette reading/cm3
volume of FA3/cm3

Rough Accurate
burette readings: volume of FA2 2dp
final burette reading/cm3
initial burette reading/cm3
volume of FA2/cm3
2 ticks

Average volume of FA2=(?+?)/2=?2dp
25.0cm3 of FA 1 required ? of FA 3 for complete reaction.

The results are not anomalous. The results are consistent within +-0.10 cm3 of each other.

The titrant wad added dropwise near the end-point hence the end-point could be determined accurately.

calculation
immediate working 4sf
final ans 3sf
RMM 1dp
water of crystallisation whole no