[{name:"xyz",numericProperty:28},{name:"xyz",numericProperty:10},{name:"xyz",numericProperty:33}]

db.collection.aggregate([{"$group":{"_id":"$name","name":{"$first":"$name"},"min":{"$min":"$numericProperty"},"max":{"$max":"$numericProperty"},"avg":{"$avg":"$numericProperty"}}},{$group:{_id:"$name","name":{"$first":"$name"},"numericProperty":{"$mergeObjects":{"min":"$min","max":"$max","avg":"$avg"}}}}])