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PSY 3400 Individual Quiz | & Y January 22, 2008 Name Match the scale of measurement with each of the following descriptions of data. Put the letter of the scale of measurement in the blank beside the data description. (1 pt. each) © 1. A pollster asked 1000 people who they prefer in A, ratio the Republican primary and recorded their choices as “prefer Hucklebee,” “prefer Romney,” B. nominal “prefer McCain”, or “prefer Giuliani” C. interval 2. The average verbal SAT score at State U. is 502 D. ordinal 3. The mean on a test ina statistics course was 78%. l ) 4, A pollster asked 2000 people to rank order the candidates in the Democratic primary (Clinton, Edwards, Obama, Richardson), giving a rank of 1 to their favorite and a rank of 4 to their least favorite. Questions 5 and 6 refer to the following set of scores. 8 B -ordered 3 3 6 6 3 8 5. Give the median. (2 pts) middles Bt Gf Stb=9ar 4s 6. Give the mean. Show your work. (2 pts) = = X20 - Ss. 0 StB3rbt§=a0 MW YE What is the difference between random sampling and random assignment? (1 pt) Ay random assignment means that everyone in a sample has an equal chance of being placed in any one group; random sample means that everyone in a population has an equal chance of being part of the sample B) random sample means that everyone in a sample has an equal chance of being placed in any one group; random assignment means that everyone in a population has an equal chance of being part of the sample Questions 8-10 refer to the following distribution; (2 pts each) 
