Public bug reported:

The average rating for apps in ubuntu-software seems to be calculated
incorrectly. For example

"Genius Math Tool" had an average rating of 2 stars and 9 reviews each
with 4-5 star rating. So i added another 4 star review. The expected
average rating is 4 stars currently a 2 star rating is displayed.

Another package with obviously weird average rating is "Log File Viewer"
currently at average 3 star rating. Considering the reviews it should be
closer to 4.6.


Further Info:

$ lsb_release -rd
Description:    Ubuntu 16.04.3 LTS
Release:        16.04

$apt-cache policy ubuntu-software 
ubuntu-software:
  Installed: 3.20.5-0ubuntu0.16.04.6
  Candidate: 3.20.5-0ubuntu0.16.04.6

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-software 3.20.5-0ubuntu0.16.04.6
ProcVersionSignature: Ubuntu 4.10.0-35.39~16.04.1-generic 4.10.17
Uname: Linux 4.10.0-35-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Oct  5 01:51:14 2017
InstallationDate: Installed on 2017-05-22 (135 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 
(20170215.2)
SourcePackage: gnome-software
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gnome-software (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-software in Ubuntu.
https://bugs.launchpad.net/bugs/1721419

Title:
  Average rating for apps incorrect

Status in gnome-software package in Ubuntu:
  New

Bug description:
  The average rating for apps in ubuntu-software seems to be calculated
  incorrectly. For example

  "Genius Math Tool" had an average rating of 2 stars and 9 reviews each
  with 4-5 star rating. So i added another 4 star review. The expected
  average rating is 4 stars currently a 2 star rating is displayed.

  Another package with obviously weird average rating is "Log File
  Viewer" currently at average 3 star rating. Considering the reviews it
  should be closer to 4.6.

  
  Further Info:

  $ lsb_release -rd
  Description:  Ubuntu 16.04.3 LTS
  Release:      16.04

  $apt-cache policy ubuntu-software 
  ubuntu-software:
    Installed: 3.20.5-0ubuntu0.16.04.6
    Candidate: 3.20.5-0ubuntu0.16.04.6

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-software 3.20.5-0ubuntu0.16.04.6
  ProcVersionSignature: Ubuntu 4.10.0-35.39~16.04.1-generic 4.10.17
  Uname: Linux 4.10.0-35-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.1-0ubuntu2.10
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Oct  5 01:51:14 2017
  InstallationDate: Installed on 2017-05-22 (135 days ago)
  InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 
(20170215.2)
  SourcePackage: gnome-software
  UpgradeStatus: No upgrade log present (probably fresh install)

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