Green Bridge Learning Resource Nchekwa Maka Statistical Charts And Diagrams

Gbogbo ọrọ náà

A good chart turns a column of numbers into a picture you can understand at a glance. Bar charts compare quantities, pie charts show how a whole is shared, and stem-and-leaf diagrams keep the data while showing its shape. Choosing and reading the right chart is a core data skill.

In this lesson you will draw and interpret bar charts, pie charts, pictograms, stem-and-leaf diagrams and simple frequency distributions.

Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Statistical Charts And Diagrams. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.

Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.

Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.

Of 30 students, 12 travel by bus. The pie chart angle for bus is: A. 12° B. 120° C. 144° D. 360° Answer: C
The angles of all the slices in a pie chart add up to: A. 100° B. 180° C. 270° D. 360° Answer: D
Which chart is best for comparing the frequencies of separate categories? A. pie chart B. bar chart C. scatter diagram D. stem-and-leaf Answer: B
In a stem-and-leaf diagram, 2 | 5 means (with a suitable key): A. 2.5 B. 7 C. 25 D. 52 Answer: C
A pie chart is best used to show: A. correlation B. shares of a whole C. a trend over time D. exact raw data Answer: B