Ease of use

The users were asked the following question :

Is the CTK-811 easy to use?

255 users answered questions and rated the product on a scale of 0 to 10. The rating is 10/10 if the CASIO CTK-811 is very user-friendly.

The reviews (rough results) are presented in the following graph :

0	1	2	3	4	5	6	7	8	9	10

By leaving the mouse on a column for a few seconds, you can see the number of people who voted to make up the score that appears in the horizontal axis.

Statistical data :

= 7.57
= 2.71
The average score balanced by the number of reviews is 7.57 and the standard differential is 2.71.

High-performance

The users were asked the following question :

Is the CTK-811 highly efficient?

255 users answered questions and rated the product on a scale of 0 to 10. The rating is 10/10 if the CASIO CTK-811 is, in its domain, the best on a technical level, the one offering the best quality, or offering the largest range of options.

The reviews (rough results) are presented in the following graph :

0	1	2	3	4	5	6	7	8	9	10

By leaving the mouse on a column for a few seconds, you can see the number of people who voted to make up the score that appears in the horizontal axis.

Statistical data :

= 7.89
= 2.38
The average score balanced by the number of reviews is 7.89 and the standard differential is 2.38.

Reliability

The users were asked the following question :

Is the CTK-811 reliable, sturdy?

255 users answered questions and rated the product on a scale of 0 to 10. The rating is 10/10 if you think that the CASIO CTK-811 is a sturdy product, which will last a long time before breaking down.

The reviews (rough results) are presented in the following graph :

0	1	2	3	4	5	6	7	8	9	10

By leaving the mouse on a column for a few seconds, you can see the number of people who voted to make up the score that appears in the horizontal axis.

Statistical data :

= 8.00
= 2.40
The average score balanced by the number of reviews is 8 and the standard differential is 2.4.

Value for money

The users were asked the following question :

Is the CTK-811 good value for money?

255 users answered questions and rated the product on a scale of 0 to 10. The rating is 10/10 if you think that the CASIO CTK-811 is really not expensive considering its features.

The reviews (rough results) are presented in the following graph :

0	1	2	3	4	5	6	7	8	9	10

By leaving the mouse on a column for a few seconds, you can see the number of people who voted to make up the score that appears in the horizontal axis.

Statistical data :

= 7.80
= 2.60
The average score balanced by the number of reviews is 7.8 and the standard differential is 2.6.