Buat kuiz
masalah 1
pilihan
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
Bilik Melarikan Diri Sekolah
Gaya Bebas
Universiti
matematik
AM025 Topic 8 (A17&19)
Shirley Hee
59
0
Allow incorrect answer
Sembunyikan jawapan
public kuiz
masalah 2
pilihan
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.
masalah 3
pilihan
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
masalah 4
pilihan
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
masalah 5
pilihan
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
masalah 6
jawapan 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.
masalah 7
jawapan 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)
masalah 8
jawapan 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
masalah 9
jawapan 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
masalah 10
jawapan 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.
masalah 11
jawapan 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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