DS21

Q. 1)Add a JavaScript File in Codeigniter. The Javascript code should check whether a number is
positive or negative. [Marks 15]
// Define a function to check whether a number is positive or negative
function checkNumber(number) {
if (number > 0) {
return "Positive";
} else if (number < 0) {
return "Negative";
} else {
return "Zero";
}
}<script src="<?php echo base_url('js/numberChecker.js'); ?>"></script>
// Example usage of checkNumber function
var number = 10;
var result = checkNumber(number);
console.log("The number is " + result);

Q. 2)Build a simple linear regression model for User Data.
import pandas as pd
from sklearn.model_selection import train_test_split
from sklearn.linear_model import LinearRegression
from sklearn.metrics import mean_squared_error

df = pd.read_csv('your_dataset.csv')

X = df[['feature1', 'feature2', ...]] # Include all relevant features
y = df['target_variable']

X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42)

model = LinearRegression()

model.fit(X_train, y_train)

y_pred = model.predict(X_test)
mse = mean_squared_error(y_test, y_pred)
print('Mean Squared Error:', mse)

new_data = pd.read_csv('new_data.csv')
new_predictions = model.predict(new_data)