Question

PYTHON.

Write the following functions without using any predefined functions unless specified.

def min (dataList) :       #returns the smallest value of the data values in dataList

def max (dataList):        #returns the largest value

def getRange (dataList)

def mean (dataList) :     #returns the average of data values

def median (dataList):    #returns the middle value of an ordered list

#note: to sort the list first, may use the predefined sort function

Then write a test1 function to test the above functions using the following data sets.

1. d1 = [37,32,46,28,37,41,31]
2. d2 = [2.5, 5.3, 6.1, 1.34, 3.3, 5, 25, 4.3, 6.0. 0.5]
3. d3 = []
4. d4 = “abc”  
5. d5 = [2.5, “abc”, 4]

Write a test2 function that imports the functions in the first task from statistics module and perform the same test as in the second task. Finish with a main function to call test1() and test().

Answer 1

Answer:

# min fucntion to find the minimum value
def min(dataList):
try:
dataList.sort()
return dataList[0]
except:
return "Data list may be empty or contains some non numeric characters."

# max fucntion to find the maximum value
def max(dataList):
try:
dataList.sort()
return dataList[-1]
except:
return "Data list may be empty or contains some non numeric characters."

# getrange fucntion is not defined properly so i am just returning the length of the list
# Kindly add the more informatio about this fucntion
def getRange (dataList):
return len(dataList)

# mean fucntion
def mean (dataList) :
try:
total = 0
for num in dataList:
total += num
mean = total /len(dataList)
return mean

except:
return "Data list may be empty or contains some non numeric characters."

# median fucntion
def median (dataList):
try:
n = len(dataList)
dataList.sort()
if n % 2 == 0:
median1 = dataList[n//2]
median2 = dataList[n//2 - 1]
median = (median1 + median2)/2
else:
median = dataList[n//2]
return median
except:
return "Data list may be empty or contains some non numeric characters."

# test1 fucntion
def test1():
d1 = [37,32,46,28,37,41,31]
d2 = [2.5, 5.3, 6.1, 1.34, 3.3, 5, 25, 4.3, 6.0, 0.5]
d3 = []
d4 = "abc"
d5 = [2.5, "abc", 4]
dataset = [d1, d2, d3, d4, d5]
i = 1
for d in dataset:
print("For dataset d" + str(i))
print(min(d))
print(max(d))
print(getRange(d))
print(mean(d))
print(median(d))
i += 1
print()

# test2 fucntion
def test2():
import statistics
d1 = [37,32,46,28,37,41,31]
d2 = [2.5, 5.3, 6.1, 1.34, 3.3, 5, 25, 4.3, 6.0, 0.5]
d3 = []
d4 = "abc"
d5 = [2.5, "abc", 4]
dataset = [d1, d2, d3, d4, d5]
i = 1
for d in dataset:
try:
print("For dataset d" + str(i))
print(min(d))
print(max(d))
print(statistics.mean(d))
print(statistics.median(d))
  
except:
print("Data list may be empty or contains some non numeric characters.")
i +=1
print()
# main fucntion
def main():
print("\nTest1:\n")
test1()
print("\nTest2:\n")
test2()

if __name__ == "__main__":
main()

Code Screen shot:

Sample Output:

Note: Let me know if you have any doubt.