Exam 1

1. Metainformation

   Tag	Value
   file	Descriptive-statistics_eur-descriptive-202-en_eur-descriptive-202-en
   name	eur-descriptive-202-en
   section	Descriptive statistics/Summary Statistics/Measures of Location, Descriptive statistics/Summary Statistics/Measures of Location/Mean
   type	schoice
   solution	TRUE, FALSE, FALSE, FALSE
   Type	Calculate
   Program
   Language	English
   Level	Statistical Literacy

   Question

   Below, the responses of 4 people on 5 variables are shown. What are the rounded total scores (I to IV) when only the people who gave at least 3 answers are included? In SPSS this would be the function: rnd(means.3(v1 to v5) $\times$ 5).

   ID	V1	V2	V3	V4	V5	Total
   1	1	…	…	2	3	(I)
   2	3	…	…	…	2	(II)
   3	1	2	2	3	…	(III)
   4	3	2	2	1	1	(IV)

   
   
   1. TRUE:
      1. 10, (II) missing, (III) 10 en (IV) 9
   2. FALSE:
      1. missing, (II) missing, (III) missing, (IV) 9
   3. FALSE:
      1. 6, (II) missing, (III) 8, (IV) 9
   4. FALSE:
      1. missing, (II) missing, (III) 10, (IV) 9
   
   

   Solution

   “(I) 10, (II) missing, (III) 10 en (IV) 9” is correct. For each person with at least 3 scores, you replace the missings by their mean score. For person 1 this makes: $1+2+3 \div 3 = 2$, so the scores are: 1, 2, 2, 2, 3 so a total score of 10. Person 2 is excluded, so “missing”, person 3 gets $8 \div 4 = 2$ to replace the missing, so the scores are 1, 2, 2, 3, 2 and the total score is 10. Person 4 has a total score of 9.

   
   
   1. True
   2. False
   3. False
   4. False