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Merge pull request #131 from Ritu1611/patch-3

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Confidence Interval Problem Generator
This commit is contained in:
Luke Weiler
2020-10-17 13:31:55 -04:00
committed by GitHub
parent 7a7935246d 1ab1fa15c3
commit 5348662046
1 changed files with 26 additions and 5 deletions
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27
mathgenerator/mathgen.py
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@@ -726,7 +726,6 @@ def quadraticEquation(maxVal=100):
solution = str([round((-b+D)/(2*a), 2),round((-b-D)/(2*a), 2)])
return problem,solution
def hcfFunc(maxVal=20):
a = random.randint(1, maxVal)
b = random.randint(1, maxVal)
@@ -765,6 +764,27 @@ def exponentiationFunc(maxBase = 20,maxExpo = 10):
solution = str(base ** expo)
return problem, solution
def confidenceIntervalFunc():
n=random.randint(20,40)
j=random.randint(0,3)
lst=random.sample(range(200,300),n)
lst_per=[80 ,90, 95, 99]
lst_t = [1.282, 1.645, 1.960, 2.576]
mean=0
sd=0
for i in lst:
count= i + mean
mean=count
mean = mean/n
for i in lst:
x=(i-mean)**2+sd
sd=x
sd=sd/n
standard_error = lst_t[j]*math.sqrt(sd/n)
problem= 'The confidence interval for sample {} with {}% confidence is'.format([x for x in lst], lst_per[j])
solution= '({}, {})'.format(mean+standard_error, mean-standard_error)
return problem, solution
# || Class Instances
#Format is:
@@ -817,10 +837,11 @@ vectorCross = Generator("Cross Product of 2 Vectors", 43, "a X b = ", "c", vecto
compareFractions=Generator("Compare Fractions",44,"Which symbol represents the comparison between a/b and c/d?",">/</=",compareFractionsFunc)
simpleInterest = Generator("Simple Interest", 45, "Simple interest for a principle amount of a dollars, b% rate of interest and for a time period of c years is = ", "d dollars", simpleInterestFunc)
matrixMultiplication = Generator("Multiplication of two matrices", 46, "Multiply two matrices A and B", "C", matrixMultiplicationFunc)
CubeRoot = Generator("Cube Root",47,"Cuberoot of a upto 2 decimal places is","b",cubeRootFunc)
cubeRoot = Generator("Cube Root",47,"Cuberoot of a upto 2 decimal places is","b",cubeRootFunc)
powerRuleIntegration = Generator("Power Rule Integration", 48, "nx^m=", "(n/m)x^(m+1)", powerRuleIntegrationFunc)
fourthAngleOfQuadrilateral = Generator("Fourth Angle of Quadrilateral",49,"Fourth angle of Quadrilateral with angles a,b,c =","angle4",fourthAngleOfQuadriFunc)
quadraticEquationSolve = Generator("Quadratic Equation", 50, "Find the zeros {x1,x2} of the quadratic equation ax^2+bx+c=0", "x1,x2", quadraticEquation)
hcf = Generator("HCF (Highest Common Factor)", 51, "HCF of a and b = ", "c", hcfFunc)
DiceSumProbability=Generator("Probability of a certain sum appearing on faces of dice", 52,"If n dices are rolled then probabilty of getting sum of x is =","z", DiceSumProbFunc)
diceSumProbability=Generator("Probability of a certain sum appearing on faces of dice", 52,"If n dices are rolled then probabilty of getting sum of x is =","z", DiceSumProbFunc)
exponentiation = Generator("Exponentiation", 53,"a^b = ","c",exponentiationFunc)
confidenceInterval = Generator("Confidence interval For sample S", 54, "With X% confidence", "is (A,B)", confidenceIntervalFunc)