diff --git a/ddl/ddl.go b/ddl/ddl.go
index aa9b461a65453..50c426763340a 100644
--- a/ddl/ddl.go
+++ b/ddl/ddl.go
@@ -114,7 +114,7 @@ func newDDL(store kv.Storage, infoHandle *infoschema.Handle, hook Callback, leas
 
 	d.start()
 
-	variable.RegisterStatist(d)
+	variable.RegisterStatistics(d)
 
 	return d
 }
diff --git a/domain/domain.go b/domain/domain.go
index ae34278520f1c..98b52e67a3f53 100644
--- a/domain/domain.go
+++ b/domain/domain.go
@@ -108,7 +108,7 @@ func (do *Domain) SetLease(lease time.Duration) {
 	do.ddl.SetLease(lease)
 }
 
-// Stats returns the DDL statistic.
+// Stats returns the domain statistic.
 func (do *Domain) Stats() (map[string]interface{}, error) {
 	m := make(map[string]interface{})
 	m[ddlLastReloadSchemaTS] = atomic.LoadInt64(&do.lastLeaseTS)
@@ -195,7 +195,7 @@ func NewDomain(store kv.Storage, lease time.Duration) (d *Domain, err error) {
 		log.Fatalf("load schema err %v", err)
 	}
 
-	variable.RegisterStatist(d)
+	variable.RegisterStatistics(d)
 
 	go d.loadSchemaInLoop(lease)
 
diff --git a/plan/plans/show_test.go b/plan/plans/show_test.go
index 4e117ab37c2d7..b0c65463ccd8e 100644
--- a/plan/plans/show_test.go
+++ b/plan/plans/show_test.go
@@ -58,7 +58,7 @@ func (p *testShowSuit) SetUpSuite(c *C) {
 	p.ctx = nc
 	variable.BindSessionVars(p.ctx)
 	variable.BindGlobalVarAccessor(p.ctx, nc)
-	variable.RegisterStatist(p.ms)
+	variable.RegisterStatistics(p.ms)
 
 	p.dbName = "testshowplan"
 	p.store = newStore(c, p.dbName)
diff --git a/sessionctx/variable/statusvar.go b/sessionctx/variable/statusvar.go
index e1db3e3128231..f260d976dfcbe 100644
--- a/sessionctx/variable/statusvar.go
+++ b/sessionctx/variable/statusvar.go
@@ -25,8 +25,8 @@ var globalStatusScopes = make(map[string]ScopeFlag)
 // DefaultScopeFlag is the status default scope.
 var DefaultScopeFlag = ScopeGlobal | ScopeSession
 
-// Statists is the set of all statists.
-var Statists []Statist
+// StatisticsList is the set of all statistics.
+var StatisticsList []Statistics
 
 // StatusVal is the value of the corresponding status variable.
 type StatusVal struct {
@@ -34,32 +34,32 @@ type StatusVal struct {
 	Value interface{}
 }
 
-// Statist is the interface of statist.
-type Statist interface {
+// Statistics is the interface of statistics.
+type Statistics interface {
 	// GetScope gets the status variables scope.
 	GetScope(status string) ScopeFlag
-	// Stats returns the statist statistics.
+	// Stats returns the statistics status variables.
 	Stats() (map[string]interface{}, error)
 }
 
-// RegisterStatist registers statist.
-func RegisterStatist(s Statist) {
-	Statists = append(Statists, s)
+// RegisterStatistics registers statistics.
+func RegisterStatistics(s Statistics) {
+	StatisticsList = append(StatisticsList, s)
 }
 
-// GetStatusVars gets registered statists status variables.
+// GetStatusVars gets registered statistics status variables.
 func GetStatusVars() (map[string]*StatusVal, error) {
 	statusVars = make(map[string]*StatusVal)
 	ret := make(map[string]*StatusVal)
 
-	for _, statist := range Statists {
-		vals, err := statist.Stats()
+	for _, statistics := range StatisticsList {
+		vals, err := statistics.Stats()
 		if err != nil {
 			return nil, errors.Trace(err)
 		}
 
 		for name, val := range vals {
-			scope := statist.GetScope(name)
+			scope := statistics.GetScope(name)
 			statusVars[name] = &StatusVal{Value: val, Scope: scope}
 			ret[name] = &StatusVal{Value: val, Scope: scope}
 		}
diff --git a/sessionctx/variable/statusvar_test.go b/sessionctx/variable/statusvar_test.go
index 8d4630b5ce132..fb5046d25c419 100644
--- a/sessionctx/variable/statusvar_test.go
+++ b/sessionctx/variable/statusvar_test.go
@@ -25,7 +25,7 @@ type testStatusVarSuite struct {
 
 func (s *testStatusVarSuite) SetUpSuite(c *C) {
 	s.ms = &mockStatist{}
-	RegisterStatist(s.ms)
+	RegisterStatistics(s.ms)
 }
 
 // mockStatist represents mocked statist.