Summary
Records
538,989
Columns
15
Memory usage
7.72 MB
Memory usage by attribute
| Attribute | Type | Info | Memory |
|---|---|---|---|
| Driver_Age_Band | 8 cats | 16 - 20, 21 - 25, 26 - 35, 36 - 45, 46 - 55, 56 - 65, 66 - 75, Over 75 | 527.22 KB |
| Driver_IMD | 10 cats | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 | 526.56 KB |
| Sex | 2 cats | Female, Male | 526.70 KB |
| Journey | 5 cats | 2,Commuting to/from work, 3,Taking pupil to/from school, 4,Pupil riding to/from school, 5 Other/Not known, Part of work | 527.00 KB |
| Hit_Objects_in | 12 cats | 0, 1, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12 | 526.58 KB |
| Hit_Objects_off | 12 cats | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 | 526.58 KB |
| Casualties | 7 cats | 1, 2, 3, 4, 5, 6, 7 - 68 | 527.12 KB |
| Severity | 3 cats | Fatal, Serious, Slight | 526.75 KB |
| Area | 2 cats | 1,Urban, 2,Rural | 526.70 KB |
| Vehicle_Age | 17 cats | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16-20, >20 | 527.87 KB |
| Road_Type | 5 cats | 1,Roundabout, 2,One way street, 3,Dual carriageway, 6,Single carriageway, 7,Slip road | 526.97 KB |
| Speed_limit | 8 cats | 10, 15, 20, 30, 40, 50, 60, 70 | 526.55 KB |
| Light | 5 cats | 1,Daylight, 4,Darkness - lights lit, 5,Darkness - lights unlit, 6,Darkness - no lighting, 7,Darkness - lighting unknown | 527.00 KB |
| Vehicle_Location | 10 cats | 0,On main c'way - not in restricted lane, 1,Tram/Light rail track, 2,Bus lane, 3,Busway (including guided busway), 4,Cycle lane (on main carriageway), 5,Cycleway or shared use footway (not part of main carriageway), 6,On lay-by or hard shoulder, 7,Entering lay-by or hard shoulder, 8,Leaving lay-by or hard shoulder, 9,Footway (pavement) | 527.57 KB |
| Vehicle_Type | 20 cats | Van / Goods 3.5 tonnes mgw or under, 4,Motorcycle over 125cc and up to 500cc, 10,Minibus (8 - 16 passenger seats), 16,Ridden horse, Bus_coach_17+, 17,Agricultural vehicle, 18,Tram, 20,Goods over 3.5t. and under 7.5t, 21,Goods 7.5 tonnes +, 22,Mobility scooter, 23,Electric motorcycle, Motorcycle 50cc and under, 90,Other vehicle, 97,Motorcycle - unknown cc, 98,Goods vehicle - unknown weight, Motorcycle 125cc and under, Motorcycle over 500cc, Car, Pedal cycle, Taxi/Private hire car | 528.42 KB |
Variable Profiles
Driver_Age_Band
Categorical Ordered| Categories | 8 |
| Most frequent | 26 - 35 (102,643 values, 19.04%) |
| Least frequent | Over 75 (13,041 values, 2.42%) |
| Missings | 61,389 (11.39%) |
| Memory | 527.22 KB |
Driver_IMD
Categorical Ordered| Categories | 10 |
| Most frequent | 2 (37,705 values, 7.00%) |
| Least frequent | 10 (26,931 values, 5.00%) |
| Missings | 199,869 (37.08%) |
| Memory | 526.56 KB |
Sex
Categorical Ordered| Categories | 2 |
| Most frequent | Male (365,266 values, 67.77%) |
| Least frequent | Female (137,270 values, 25.47%) |
| Missings | 36,453 (6.76%) |
| Memory | 526.70 KB |
Journey
Categorical Ordered| Categories | 5 |
| Most frequent | 5 Other/Not known (378,749 values, 70.27%) |
| Least frequent | 4,Pupil riding to/from school (1,337 values, 0.25%) |
| Missings | 0 (0.00%) |
| Memory | 527.00 KB |
Hit_Objects_in
Categorical Ordered| Categories | 12 |
| Most frequent | 0 (490,583 values, 91.02%) |
| Least frequent | 1 (26 values, 0.00%) |
| Missings | 41 (0.01%) |
| Memory | 526.58 KB |
Hit_Objects_off
Categorical Ordered| Categories | 12 |
| Most frequent | 0 (378,896 values, 70.30%) |
| Least frequent | 8 (237 values, 0.04%) |
| Missings | 11 (0.00%) |
| Memory | 526.58 KB |
Casualties
Categorical Ordered| Categories | 7 |
| Most frequent | 1 (475,314 values, 88.19%) |
| Least frequent | 7 - 68 (230 values, 0.04%) |
| Missings | 0 (0.00%) |
| Memory | 527.12 KB |
Severity
Categorical Ordered| Categories | 3 |
| Most frequent | Slight (422,886 values, 78.46%) |
| Least frequent | Fatal (10,349 values, 1.92%) |
| Missings | 0 (0.00%) |
| Memory | 526.75 KB |
Area
Categorical Ordered| Categories | 2 |
| Most frequent | 1,Urban (340,200 values, 63.12%) |
| Least frequent | 2,Rural (198,743 values, 36.87%) |
| Missings | 46 (0.01%) |
| Memory | 526.70 KB |
Vehicle_Age
Categorical Ordered| Categories | 17 |
| Most frequent | 7 (31,222 values, 5.79%) |
| Least frequent | >20 (3,403 values, 0.63%) |
| Missings | 147,143 (27.30%) |
| Memory | 527.87 KB |
Road_Type
Categorical Ordered| Categories | 5 |
| Most frequent | 6,Single carriageway (427,848 values, 79.38%) |
| Least frequent | 7,Slip road (4,897 values, 0.91%) |
| Missings | 4,357 (0.81%) |
| Memory | 526.97 KB |
Speed_limit
Categorical Ordered| Categories | 8 |
| Most frequent | 30 (350,099 values, 64.95%) |
| Least frequent | 15 (10 values, 0.00%) |
| Missings | 0 (0.00%) |
| Memory | 526.55 KB |
Light
Categorical Ordered| Categories | 5 |
| Most frequent | 1,Daylight (358,282 values, 66.47%) |
| Least frequent | 5,Darkness - lights unlit (2,934 values, 0.54%) |
| Missings | 0 (0.00%) |
| Memory | 527.00 KB |
Vehicle_Location
Categorical Ordered| Categories | 10 |
| Most frequent | 0,On main c'way - not in restricted lane (518,451 values, 96.19%) |
| Least frequent | 4,Cycle lane (on main carriageway) (322 values, 0.06%) |
| Missings | 43 (0.01%) |
| Memory | 527.57 KB |
Vehicle_Type
Categorical Ordered| Categories | 20 |
| Most frequent | Car (386,346 values, 71.68%) |
| Least frequent | 23,Electric motorcycle (10 values, 0.00%) |
| Missings | 141 (0.03%) |
| Memory | 528.42 KB |
Correlations
Cramér's V — categorical variables
Crosstab heatmaps — categorical pairs
