Normal Distribution Quiz

What is the shape of a normal distribution graph? /

Apakah bentuk graf taburan normal?

• Skewed to the left

• Bell-shaped

• Uniform

• Exponential

What is the total area under a standard normal distribution curve? /

Apakah jumlah luas di bawah lengkung taburan normal piawai?

• 0.5

• 0.75

• 1.0

• 2.0

In a normal distribution, the mean is equal to: /

Dalam taburan normal, min adalah sama dengan:

• Mode only

• Median only

• Both median and mode

• Variance

Given X ~ N(100, 15²), find the z-score when x = 130. /

Diberi X ~ N(100, 15²), cari skor-z apabila x = 130.

• 1.5

• 2

• 0.5

• -1.5

What is the formula for calculating a z-score? /

Apakah formula untuk mengira skor-z?

• z = (σ - μ) / x

• z = (x - μ) / σ

• z = μ / σ

• z = σ / (x - μ)

Which of the following statements is true for a normal distribution? /

Yang manakah benar bagi taburan normal?

• It is skewed to the right

• Mean > Median

• It is symmetrical

• Mode < Median

In a standard normal distribution, what is the mean (μ)? /

Dalam taburan normal piawai, apakah nilai min (μ)?

• 0

• 1

• 10

• -1

What happens to the normal distribution curve if the standard deviation increases? /

Apa berlaku kepada lengkung taburan normal jika sisihan piawai bertambah?

• It becomes narrower / Ia menjadi lebih sempit

• It shifts to the left / Ia beralih ke kiri

• It becomes wider / Ia menjadi lebih lebar

• It becomes skewed / Ia menjadi condong

Which of the following is NOT a property of the normal distribution? /

Yang manakah BUKAN ciri taburan normal?

• • Symmetrical shape / Bentuk simetri

• Mean = Median = Mode

• Area under the curve equals 1

• Always skewed to the right / Sentiasa condong ke kanan