Exam 1

1. Metainformation

   Tag	Value
   file	Descriptive-statistics_vufsw-measures_of_spread-1141-en_vufsw-measures_of_spread-1141-en
   name	vufsw-measures of spread-1141-en
   section	descriptive statistics/summary statistics/measures of spread
   type	schoice
   solution	FALSE, TRUE, FALSE, FALSE
   Type	calculation
   Program	calculator
   Language	English
   Level	statistical literacy

   Question

   A researcher asks 10 people if they did not eat (0) or they did eat (1) vegetarian the previous day. This yields the data below.

   Observation	1	2	3	4	5	6	7	8	9	10
   x	0	1	0	0	1	0	0	1	0	0

   The standard error of the proportion of people who eat vegetarian is …

   
   
   1. FALSE: 0.021
   2. TRUE: 0.145
   3. FALSE: 0.153
   4. FALSE: 0.458
   
   

   Solution

   The standard error calculation is; se = sd / (√n)

   First calculate the sd: the root from difference between value and the mean, all sum than divide by the n and from that number again the root.
   (7x(0,3)² + 3X (0,7)²)=  2.107

   SD = √ (2.107/10)= 0.459
   SE= 0.459 / √10 = 0.145

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