have an array like this
$dragonball = [
[
"respondent" => "Son go",
"question1" => "95",
"question2" => "90",
"question3" => "80"
],
[
"respondent" => "Son gohan",
"question1" => "85",
"question2" => "80",
"question3" => "95"
],
[
"respondent" => "Son go",
"question1" => "75",
"question2" => "90",
"question3" => "90"
]
];
how to find average of question 1, question2, and question3 ?
expected it will show like this average question1 => average question2 => average question3 =>