Chapter 13: Binduon ko Jodna…
Data har jagah hai, cricket score se pyaaz ke daam aur lambaai tak. Is chapter mein seekhenge kaunse sawaalon ko data chahiye, data ka saar mean aur median se, outliers ka asar, dot plot aur double bar graph se data ka chitran, aur data jaasoos banna jo sirf wahi kahe jo data saabit kare.
Is chapter mein tum
- statistical sawaal pehchaanna
- mean aur median nikaalna aur milaana
- dot plot aur double bar graph padhna aur banaana
- data se sirf saabit nishkarsh nikaalna
Topics
- Sawaal aur Kathan NCERT P2 5.1
Statistical sawaal badalte data se hal hota hai.
- Pratinidhi Maan NCERT P2 5.2
Mean = jod ÷ ginti (barabar hissa); median = kram mein beech ka maan.
- Data ka Chitran NCERT P2 5.3
Double bar graph har shreni ke do bar agal-bagal rakhkar do samoohon ki tulna karta hai.
- Data Jaasoos NCERT P2 5.4
Daave data se saabit karo; ausat samooh batata hai, har vyakti nahi.
Key words
- Statistical question
- badalte data se hal hone wala sawaal
- Mean
- maanon ka jod ÷ ginti
- Median
- kram mein lage data ka beech wala maan
- Outlier
- baaki se bahut door ka maan
- Dot plot
- number line ke upar dot, har maan ka ek
- Double bar graph
- har shreni ke do bar agal-bagal
Summary
- Statistical sawaal ko badalta data chahiye.
- Mean = jod ÷ ginti; median = kram mein beech ka (even ginti mein beech ke do ka ausat).
- Outliers mean ko kheenchte par median ko mushkil se badalte.
- Dot plot aur double bar graph failaav aur tulna dikhaate; nishkarsh se pehle scale padho.