1 The median is the middle value of the data set. 2  The lower quartile (Q 1) is the median of the lower half of the data set. 3  The upper quartile (Q 3) is the median of the upper half of the data set. 4  The interquartile range (IQR) is the spread of the middle 50% of the data values.
Removable Essix retainers typically cost between $100-$250 for one or $200-$500 for two. They are made from a vacuum sealed clear plastic that is less noticeable but more likely to break or warp, meaning that you could be paying the price more than once for this style of retainer.
Retainer fee deposit amounts are dependent on the specific investigation service provided. For example, data research may require an average deposit of $500-$1500 while infidelity, child custody and workers compensation cases may require an average retainer fee deposit between $1,500-$5,000.Criminal defense work may require an average retainer fee of $1,500-$3,500.or example, data research may require an average deposit of $500-$1500 while infidelity, child custody and workers compensation cases may require an average retainer fee deposit between $1,500-$5,000.