Dans un journal, on peut lire: «Cette année, \( 80 \% \) des ćlèves de terminales du lycée ont réussi contre \( 75 \% \) l'an demier. Le nombre d’élèves ayant réussi est donc plus grand cette année que l'an dernier. »Que pensez-vous de cette affirmation?

Uma escola de \( 1^{10} \) grau abriga 124 alunos. Obtenha uma amostra representativa cor- respondendo a \( 15 \% \) da população. Sugestão: use a \( 8^{a}, 9^{a} \) e \( 10^{a} \) colunas, a partir da \( 1^{\text {a }} \) linha, da Tabela de Números Aleatórios (de cima para baixo).

ما هو الرسم البياني Scatter Plot وكيف يُستخدم لتمثيل البيانات؟

Use the technique of linear regression to find the line of best fit for the given points. Round any intermediate calculations to no less than six decimal places, and round the coefficients to two decimal places. Answer \( (1,10),(2,6),(3,3),(4,10),(5,4),(6,3),(7,2) \)

If a scatter plot shows points that are closely clustered together, what can you infer about the correlation between the variables?

What is the mean of the prime numbers greater than 30 but less than 45 ?