In: Statistics and Probability
Calculate the 20th, 40th, and 70th percentiles for the following data set: (Use the methodology shown in Section 3.2 of the text to calculate the percentiles. Negative values should be indicated by a minus sign. Do not round intermediate calculations. Round your final answers to 1 decimal place.)
| −201 | −263 | −399 | −296 | −395 | −322 | 
 −312  | 
| 20th Percentile | |
| 40th Percentile | |
| 70th Percentile |