Table 4 Grouping of cities of the Volga Federal District of Russia by the Moran's index (average monthly salary) in 2017 (Russian regions. Main social and economic parameters of cities. 2018 // Federal Service of State Statistics [Electronic resource] URL:http://www.gks.ru/free_doc/doc_2018/region/reg-gor18.pdf (date of application 07.02.2020).)

Sterlitamak

 − 0.556

0.45394

 − 0.01

Ufa

1.4738

0.058

0.00271

Neftekamsk

 − 0.514

0.2467

 − 0.03

Nizhnekamsk

1.61601

0.12285

0.00620

Oktyabrsky

 − 0.13

0.30385

 − 0.01

Almetyevsk

1.98419

0.09701

0.00601

Naberezhnye Chelny

 − 0.07

0.58001

 − 0.01

Izhevsk

0.2007

0.13594

0.00085

Kirov

 − 0.134

0.020

 − 0.01

Perm

1.45201

0.07809

0.00354

Dzerzhinsk

 − 0.292

0.204

 − 0.02

Berezniki

1.15777

0.08694

0.00314

Orsk

 − 1.363

0.061

 − 0.03

Orenburg

0.57542

0.02623

0.00047

Samara

1.08803

0.20837

0.00708

Novokuibyshevsk

0.74327

0.41318

0.0095

Yoshkar-Ola

 − 0.532

 − 0.140

0.002

Salavat

0.850

 − 0.063

 − 0.002

Saransk

 − 0.950

 − 0.180

0.005

Kazan

1.226

 − 0.176

 − 0.007

Cheboksary

 − 0.639

 − 1.040

0.021

Nizhny Novgorod

1.543

 − 0.312

 − 0.015

Novocheboksarsk

 − 1.547

 − 0.456

0.022

Arzamas

 − 0.929

 − 0.047

0.001

Penza

 − 0.431

 − 0.189

0.003

Togliatti

 − 0.287

 − 0.008

0.000

Syzran

 − 0.939

 − 0.093

0.003

Saratov

 − 0.195

 − 1.090

0.007

Engels

 − 1.269

 − 0.203

0.008

Balakovo

 − 1.520

 − 0.165

0.008

Ulyanovsk

 − 0.399

 − 0.305

0.004

Dimitrovgrad

 − 1.200

 − 0.012

0.000