Interpreting statistical data: แบบฝึกหัด

The following frequency table shows the number of cars of different colors observed in a car park:

Which color is the mode for this data set?

A survey was conducted on \( 240 \) people to find their favorite type of movie. The results are represented in a pie chart. If the sector angle for 'Comedy' is \( 135^\circ \), how many people chose Comedy as their favorite movie type?

A group of students were asked to choose their favorite fruit. The results are shown in the table below:

Fruit: Apple, Banana, Orange
Frequency: 12, 18, 10

Determine the total number of students surveyed and state which fruit is the mode.

A dual bar chart shows the monthly sales of two car models, X and Y, over three months.

Model X: Jan: 15, Feb: 22, Mar: 18
Model Y: Jan: 20, Feb: 18, Mar: 25

Compare the total sales for the two models over the three-month period and state which model had the higher mean monthly sales.

A data set consists of five positive integers: \(4, 6, 7, 11, x\), where the numbers are arranged in ascending order. If the mean of the data set is equal to the median, find the value of \(x\).

A group of 40 students were asked to choose their favorite type of television program. The results are shown in the table below.

Program Type | Frequency
Comedy | 14
News | 6
Sports | 12
Drama | 8

(a) Write down the modal program type.
(b) Work out the percentage of students who chose Sports.
(c) If this data is displayed on a pie chart, calculate the angle of the sector used to represent the News programs.