How to find the total quantity of less than or equal to one element in an array?

I have an array a=[1 2 3 4 1 1 9 3 6]. I want to count the numbers which is less than or equal the element 4 in the array. And then, add those quantity and divide by 10.

Example: The 4th element is 4. There are some other elements in this array which is equal or less than of 4. How can I find the total quantity of it?

How can i do that?

[Image Analyst]

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Next the count of numbers less than 4 is a scalar (6), so what do you mean by "add those quantity"? What quantity? It's a single number 6 so there is nothing to add to it. Do you want to sum all the values less than 4?

[MEHNAZ SHARNA]

It is not a homework problem. It is just an query for my research. It is a summary of large quantity so that I can get an idea how to solve this.

Answer 1

[Image Analyst]

Well you didn't answer my questions so I'll just guess at some things

a=[1 2 3 4 1 1 9 3 6]

a = 1×9

1 2 3 4 1 1 9 3 6

indexesLessThan4 = a < 4    % A logical vector of 0 or 1

indexesLessThan4 = 1×9 logical array
   1   1   1   0   1   1   0   1   0

% Count the number
count = sum(indexesLessThan4)

count = 6

% Get the actual values
valuesLessThan4 = a(indexesLessThan4)

valuesLessThan4 = 1×6

1 2 3 1 1 3

% Sum those up and divide by 10.
result = sum(valuesLessThan4) / 10

result = 1.1000