The document is a questionnaire about statistics. It asks 10 multiple choice questions about key concepts in statistics including: 1) The correct order of steps in performing statistics is sampling, measurement, and analysis. 2) A variable usually corresponds to a measurable feature of what is being studied. 3) Having measurements clustered around the right value but in a wide range means the measurements are valid but not very reliable. 4) The end product of statistical procedures is a single summary number that characterizes all the values used in the calculation.

1. What Is Statistics?
Read and answer the questionnaire.
1. Whatis the correct order of the firstthree stepsin performingstatistics?
(a) Analysis,sampling,andmeasurement
 (b) Sampling,measurement,and analysis (Muestreo,mediciónyanálisis)
(c) Analysis,measurement,andsampling
(d) Measurement,sampling,andanalysis
2. Whichof the followingstatementsabout measurementisnot true?
(a) Measurementisa formalizedversionof observation
(b) Measurementisdifferentfromordinaryobservation
(c) Measurementprovidesaspecificdescriptionof the world
 (d) Measurementprovidesa general descriptionof the world
3. How is a variable usedin statistics?
 (a) A variable usually correspondsto some measurable feature of the subject
(b) A variable is aperson,object,oreventtowhicha measurementcanbe applied
(c) A variable isthe resultof a particularmeasurement
(d) A variable i
4. The series‘‘President,Vice-President,Secretary,Treasurer,Board Member’’ison which type
of scale?
(a) Nominal
 (b) Ordinal (losvalores tienenuna relaciónde orden)
(c) Interval
(d) Ratio
5. Whichof the followingcomponentsof statisticscontain error?
(a) Measurement
(b) Statistical analysis
(c) Sampling
 (d) All of the above

2. 6. If we have a setof measurementsthat are valid, but not very reliable,theywill . . .
 (a) Be clusteredaround the right value, but ina wide cluster
(b) Be clusteredverycloselytogether,butaroundthe wronganswer
(c) Be ina wide clusteraroundthe wrongvalue
(d) Include atleastone measurementthatisexactlythe rightvalue
7. Validityishow statisticians talk about minimizing_______ error; Reliabilityishow
statisticianstalk about minimizing_______ error.
(a) Biased;biased
 (b) Biased; unbiased
(c) Unbiased;biased
(d) Unbiased;unbiased
8. Whena comprehensive sample isnot possible,whatis the bestsampling technique touse in
order to avoid introducingadditional bias?
(a) Conveniencesample
(b) Stratifiedsample
(c) Random sample
(d) Systematicsample
9. Whichof the followingisthe end product of the proceduresused for calculating a statistical
measure?
 (a) A single summary numberthat characterizesall of the valuesusedin the calculation
(b) A statistical technique
(c) A range of numbersthat characterize the populationof interest
(d) A validandreliable measure
10. Every inferential statisticis _______, but most descriptive statisticsare not _______.
(a) Inferential;inferential
(b) Inferential;descriptive
 (c) Descriptive;inferential
(d) Descriptive;descriptive