Solution please help me and thank you ..

To find these measures, you must first put your data in order from least to greatest.   i have attached a picture with the median, lower quartile, and upper quartile labeled.i have shown you the box-and-whisker plot that you would create using these values.   the lower extreme is the smallest number, and the upper extreme is the highest number.you find the iqr by subtracting the upper quartile and the lower quartile.you will find the range by subtracting the upper extreme and the lower extreme.