Sampler – This usually refers a small hanging, made by a young girl learning to sew.  It often contained the alphabet and some numbers.  There might be a saying, Bible verse, or line of poetry, along with an embroidered design.  This was a way to learn various stitches she would use in quilting and needlework throughout her life. 
 
Also the word “sampler” often refers to a quilt nowadays.  This is one, often taught in beginning classes, that contains blocks of different patterns using different techniques, so the young quilter learns initial piecing, appliqué and quilting techniques.
(Amazon image)