In this program you CANNOT USE python libraries (pandas, numpy, etc), nor python functions (sum, etc). Fulfilling all this, I would like to know how I could calculate these measures of my quantitative variable: mean, median and mode.

This is the data reading of my quantitative variable.

#we enter people's salaries
def salary(n):
    L=[]
    for elem in range(n):
        print("enter the person's salary:")
        L.append(float(input()))
    return(L)

CodePudding user response：

You have to count several numbers separately and first sort the list of numbers (the following example assumes that the list of numbers you pass in is unordered)

median: just take the middle digit of the sorted list plural: distinguish between the presence or absence of a plural and the existence of multiple pluralities average: sum and divide by length， try this：

def get_sort_lst(lst):
    n = len(lst)
    for i in range(1, n):
        tmp, j = lst[i], i - 1
        while j >= 0 and lst[j] > tmp:
            lst[j   1] = lst[j]
            j -= 1
        lst[j   1] = tmp
    return lst


def get_median(lst):
    if len(lst) % 2 == 0:
        n = len(lst) // 2
        return (lst[n-1]   lst[n]) / 2
    else:
        return lst[len(lst)//2]


def get_mean(lst):
    res = 0
    for item in lst:
        res  = item
    return res / len(lst)


def get_plural(lst):
    res, plural = {}, []
    for item in lst:
        if item not in res:
            res[item] = 1
        else:
            res[item]  = 1
    for k, v in res.items():
        if not plural:
            plural.append(k)
        else:
            if v > res[plural[0]]:
                plural = [k]

            elif k not in plural and v == res[plural[0]]:
                plural.append(k)
    if res[plural[0]] == 1:
        return "No plural"
    else:
        return plural


def salary(lst):
    lst = get_sort_lst(lst)
    print("Mean: {}, Median: {}, Plural: {}".format(get_mean(lst), get_median(lst), get_plural(lst)))


salary([1, 2, 3, 4, 5, 5])

CodePudding user response：

You may try something like this

total = 0
count = 0
for i in L:
    total  = i
    count  = 1

Mean
mean = total/count

Median
median = L[count//2]

You can see this post to calculate mode