# 1pilihan
What is correlation in statistics?
A measure of association between two variables
The cause of a phenomenon
A type of graph
A method of data collection
AM025 Topic 8 (A17&19)
Shirley Hee
Gaya Bebas
Universiti
Matematik
AM025 Topic 8 (A17&19)
60
Universiti
Matematik
AM025 Topic 8 (A17&19)
60
11 soalan
Allow incorrect answer
Sembunyikan jawapan
public kuiz
# 2pilihan
What does a correlation coefficient of 0 mean?
No relationship between x and y.
Perfect positive relationship between x and y.
Perfect negative relationship between x and y.
Moderate relationship between x and y.
# 3pilihan
What is regression analysis used for?
Predicting the value of a dependent variable
Determining the mean of a dataset
Creating a histogram
Measuring standard deviation
# 4pilihan
What is the primary difference between correlation and regression?
Correlation measures strength; regression predicts values
Correlation uses graphs; regression does not
Regression uses tables; correlation does not
Both are the same
# 5pilihan
What does the slope of the line in a linear regression represent?
The change in the dependent variable for a one-unit change in the independent variable
The average of the dataset
The intercept of the line
The total sum of all variables
# 6Jawapan pendek
In an investigation, 100 questions related to the importance of integrity was given to 8 employees of different ages. The results are shown in the table. Find the coefficient of correlation.
r=0.9056
0.9056
petunjuk
Leave your answer in 4 decimal places.
# 7Jawapan pendek
In an investigation, 100 questions related to the importance of integrity was given to 8 employees of different ages. The results are shown in the table. Find the regression line.
y=37.298+0.772x
y=37.2841+0.7724x
petunjuk
y=1.111+1.111x (3 decimal places)
Or
y=11.1111+1.1111x (4 decimal places)
# 8Jawapan pendek
A salesman is studying the relationship between age(x) and the price(y) of a model of hand phone. The following data is obtained. Find the coefficient of determination.
0.9789
# 9Jawapan pendek
A salesman is studying the relationship between age(x) and the price(y) of a model of hand phone. The following data is obtained. Predict the price of hand phone at age 10 months.
RM1236.79
RM1236.70
# 10Jawapan pendek
The time spent in the gym fitness center(minutes) and the weight (kg) of seven randomly selected women are given in the table below. Estimate the weight of a woman who spent 40 minutes in the gym.
64.3kg
64.3 kg
petunjuk
Leave your answer in 1 decimal places.
# 11Jawapan pendek
The following table shows the number of hours spent on sleep daily and the weight of body (in kg) of six boy students. Estimate the weight of a boy who spent 6.5 hours daily for sleep.
84kg
84 kg
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