I have a project due today and i can figure it out can anyone help.

here are the guidelines
Specifics
You will use 1 file to enter all the scores. The file is named Data.txt and should be stored in the projects Debug folder. The scores are floating point numbers.

One button should calculate the mean, range, and standard deviation and display them.
You must use separate functions to calculate the 3 statistics.

One button should display the frequencies in tabular form. For this exercise, the frequencies we are interested in are as follows:
# scores < 60
60 <= # scores < 70
70 <= # scores < 80
80 <= # scores < 90
90 <= # scores

You must use a separate array to hold the totals for the individual ranges.

All scores should be displayed in a listbox.
here is what i have now which isnt much.
Code:
Option Strict On
Public Class Form1

    Private names() As String = IO.File.ReadAllLines("data.txt")
    Private scores(names.Count - 1) As Integer

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        For i As Integer = 0 To names.Count - 1
            scores(i) = CInt(names(i))
        Next
    End Sub
    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        Me.Close()
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click


    End Sub

    Function mean(ByRef sum As Integer) As Integer
        Dim total As Integer = 0
        For i As Integer = 0 To scores.Count - 1

        Next
        Return sum
    End Function

End Class