IB Maths AA HL Sl 4 3 Summary Statistics Questions

Practise calculating and interpreting mean, median, mode, grouped-data estimates, variance and standard deviation, including the effect of shifting or scaling data.

Exam points

Calculate and interpret mean, median, mode, modal class and grouped-data mean estimates, choosing the statistic suited to the distribution and data format.
Use IQR, variance and standard deviation to compare data sets, and determine how adding, subtracting or scaling every value changes the summary statistics.

[Maximum number: 2]

There are 75 players in a golf club who take part in a golf tournament. The scores obtained on the 18th hole are as shown in the following table.

Table for Question IB Maths AA HL Sl 4 3 Summary Statistics Questions question 1 — IB Maths AA HL

Calculate the mean score.

mean score $=\frac{2 \times 3+3 \times 15+4 \times 28+5 \times 17+6 \times 9+7 \times 3}{75}$
(M1)
$=\frac{323}{75}(=4.31)$

All question bank results loaded

IB Maths AA HL Sl 4 3 Summary Statistics Questions question 1