Tenemos la siguiente base de datos de pacientes con demencias diagnosticadas:
Variables:
P=Paciente
S=Sexo (h=hombre; m=mujer)
E=Edad
EVC=Enfermedad vascular central (s=sí; n=no)
EVP=Enfermedad vascular periférica (s=sí; n=no)
D=Diabetes (s=sí; n=no)
MM0=Mini Mental en el diagnóstico
MM3=Mini Mental a los 3 años
MM5=Mini Mental a los 5 años
| P | S | E | EVC | EVP | D | MM0 | MM3 | MM5 |
| 1 | h | 60 | s | n | n | 21 | 20 | 18 |
| 2 | h | 79 | n | n | n | 20 | 19 | 16 |
| 3 | h | 71 | n | s | s | 23 | 20 | 17 |
| 4 | h | 66 | n | s | s | 22 | 19 | 16 |
| 5 | m | 69 | n | n | s | 21 | 19 | 16 |
| 6 | m | 62 | n | n | s | 24 | 22 | 19 |
| 7 | m | 60 | s | n | n | 21 | 19 | 16 |
| 8 | m | 63 | s | n | n | 24 | 22 | 19 |
| 9 | m | 77 | n | s | n | 23 | 21 | 18 |
| 10 | h | 63 | n | s | n | 20 | 18 | 15 |
| 11 | h | 79 | n | s | n | 24 | 22 | 19 |
| 12 | h | 55 | n | s | s | 23 | 21 | 18 |
| 13 | m | 72 | n | n | s | 21 | 19 | 16 |
| 14 | m | 68 | n | n | n | 21 | 21 | 20 |
| 15 | h | 81 | n | n | s | 23 | 21 | 18 |
| 16 | h | 71 | n | n | n | 20 | 19 | 19 |
| 17 | m | 61 | n | s | s | 24 | 23 | 20 |
| 18 | m | 76 | s | s | s | 23 | 22 | 19 |
| 19 | m | 72 | s | s | n | 22 | 21 | 18 |
| 20 | m | 63 | n | n | n | 24 | 23 | 20 |
| 21 | m | 67 | n | n | n | 21 | 20 | 17 |
| 22 | h | 69 | n | n | n | 23 | 22 | 19 |
| 23 | h | 60 | n | n | n | 21 | 20 | 17 |
| 24 | m | 64 | n | n | s | 22 | 21 | 18 |
| 25 | m | 73 | n | n | s | 21 | 20 | 17 |
| 26 | m | 66 | s | n | n | 23 | 21 | 18 |
| 27 | m | 76 | s | n | n | 22 | 20 | 17 |
| 28 | h | 75 | n | n | n | 23 | 21 | 18 |
| 29 | m | 62 | n | n | s | 21 | 19 | 16 |
| 30 | m | 78 | n | n | n | 24 | 22 | 19 |
| 31 | h | 57 | n | s | s | 23 | 21 | 18 |
| 32 | h | 58 | n | s | s | 21 | 19 | 16 |
| 33 | m | 63 | s | s | n | 23 | 21 | 18 |
| 34 | m | 65 | n | s | n | 24 | 22 | 19 |
| 35 | m | 74 | s | s | n | 20 | 17 | 14 |
| 36 | m | 61 | n | n | n | 24 | 22 | 19 |
| 37 | h | 71 | n | n | s | 23 | 21 | 18 |
| 38 | m | 71 | n | n | n | 22 | 21 | 18 |
| 39 | m | 63 | n | n | s | 24 | 23 | 20 |
| 40 | h | 67 | n | n | s | 21 | 20 | 17 |
| 41 | h | 69 | n | n | n | 21 | 20 | 17 |
| 42 | m | 63 | n | n | n | 21 | 20 | 17 |
| 43 | m | 75 | n | s | n | 22 | 21 | 18 |
| 44 | m | 69 | n | s | n | 21 | 20 | 17 |
| 45 | m | 62 | s | s | n | 24 | 20 | 17 |
| 46 | m | 66 | s | s | s | 24 | 20 | 16 |
| 47 | h | 57 | n | s | n | 23 | 22 | 19 |
| 48 | h | 62 | n | s | s | 21 | 18 | 16 |
| 49 | h | 59 | n | n | n | 21 | 20 | 17 |
| 50 | m | 72 | n | n | s | 28 | 27 | 24 |
| 51 | m | 78 | n | n | s | 24 | 23 | 20 |
| 52 | m | 73 | s | n | n | 24 | 23 | 20 |
| 53 | m | 63 | n | n | n | 23 | 24 | 21 |
| 54 | h | 65 | s | n | n | 23 | 22 | 19 |
| 55 | m | 67 | n | s | n | 23 | 22 | 21 |
| 56 | m | 66 | n | s | n | 24 | 23 | 20 |
| 57 | h | 75 | n | n | s | 22 | 21 | 18 |
| 58 | h | 62 | n | n | n | 21 | 20 | 17 |
| 59 | m | 71 | n | n | s | 23 | 22 | 19 |
| 60 | m | 59 | s | s | n | 22 | 17 | 16 |
| 61 | m | 66 | n | n | s | 24 | 23 | 20 |
| 62 | m | 64 | n | n | s | 23 | 22 | 19 |
| 63 | m | 65 | n | n | n | 22 | 21 | 18 |
| 64 | h | 71 | n | n | n | 24 | 23 | 20 |
| 65 | h | 68 | n | n | n | 21 | 20 | 17 |
| 66 | h | 73 | n | n | n | 21 | 20 | 17 |
| 67 | m | 64 | n | n | n | 21 | 20 | 17 |
| 68 | m | 60 | s | s | s | 22 | 18 | 15 |
| 69 | m | 76 | n | n | n | 21 | 21 | 18 |
| 70 | m | 64 | n | n | s | 23 | 23 | 20 |
| 71 | h | 68 | n | n | n | 22 | 19 | 16 |
| 72 | m | 63 | n | n | s | 23 | 19 | 16 |
| 73 | m | 68 | n | n | s | 21 | 19 | 16 |
| 74 | h | 73 | n | n | n | 21 | 22 | 16 |
| 75 | h | 62 | n | n | n | 23 | 19 | 16 |
| 76 | m | 65 | n | n | n | 24 | 23 | 20 |
| 77 | m | 76 | n | n | n | 20 | 19 | 16 |
| 78 | m | 61 | n | n | n | 24 | 23 | 20 |
| 79 | m | 67 | n | n | s | 22 | 20 | 17 |
| 80 | m | 64 | n | n | n | 22 | 21 | 18 |
| 81 | h | 64 | n | n | s | 23 | 21 | 18 |
| 82 | m | 69 | n | s | s | 20 | 17 | 15 |
| 83 | m | 74 | n | n | n | 22 | 21 | 20 |
| 84 | m | 57 | n | n | n | 24 | 23 | 20 |
| 85 | h | 67 | n | n | n | 23 | 22 | 19 |
| 86 | h | 73 | n | n | n | 22 | 21 | 18 |
| 87 | m | 74 | n | n | s | 21 | 20 | 17 |
| 88 | m | 72 | s | s | n | 23 | 20 | 17 |
| 89 | m | 78 | n | n | s | 24 | 23 | 20 |
| 90 | m | 68 | s | s | s | 22 | 20 | 18 |
| 91 | h | 73 | n | n | n | 21 | 20 | 17 |
| 92 | m | 64 | n | n | n | 21 | 20 | 17 |
| 93 | h | 75 | n | n | n | 23 | 22 | 19 |
| 94 | h | 63 | n | n | n | 23 | 23 | 21 |
| 95 | m | 79 | n | n | n | 20 | 19 | 16 |
| 96 | m | 77 | s | n | s | 24 | 20 | 16 |
| 97 | m | 76 | n | n | s | 23 | 22 | 19 |
| 98 | m | 62 | n | s | n | 22 | 21 | 19 |
| 99 | h | 70 | n | n | s | 24 | 23 | 21 |
| 100 | m | 73 | n | n | s | 20 | 20 | 16 |
1.Hacer una estadística descriptiva básica (Media y desviación estándar o Mediana y rango intercuartílico) de las variable MM0, MM3, MM5 y MM0-MM5.
2.Hacer una estadística descriptiva básica de la variable «Número de enfermedades con riesgo vascular que tiene el paciente (Enfermedad vascular central, periférica o diabetes)».
3.Correlacionar el número de enfermedades con riesgo vascular que tiene el paciente con la variable MM0-MM5.
4.Correlacionar la edad con la variable MM0-MM5.
5.Comparar si hay diferencia de medias, estadísticamente significativa, en la variable MM5 entre los pacientes que tienen o no Diabetes.
6.Comparar si hay diferencia de medias, estadísticamente significativa, en la variable MM0-MM5 entre los pacientes que tienen o no Diabetes.